Showing posts with label HTML. Show all posts

Thursday, 26 January 2012

Jquery no conflict method

Since a long days, i was facing a common issue with using jQuery.

i.e. Different jquery frame works that i need to run my application smoothly was conflicting with each other.

If i implement 1, the other does not function well.

At last i came across the following technique while using jquery tabs.

<script>
var $t = jQuery.noConflict();    // assign the main jQuery object to $j
$t(function() {
$t("ul.leftsiteappslist").tabs("div.css-panes > div", {effect: 'ajax', history: true});
});
</script>

Now my conflict problem is solved.

Wednesday, 18 January 2012

jquery visitors flip counter like digital clock

I was visiting a website called stepout.com. I came across this members counter which seem to be cool. So here i explain it for you, how it is done.

Step-1 : We start by adding some jquery plugins and css to our page

 <!-- jQuery from Google CDN, REQUIRED -->
    <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.5/jquery.min.js"></script>
    <!-- My flip counter script, REQUIRED -->
    <script type="text/javascript" src="js/flipcounter.min.js"></script>
    <!-- Style sheet for the counter, REQUIRED -->
    <link rel="stylesheet" type="text/css" href="css/counter.css" />

    <!-- jQueryUI from Google CDN, used only for the fancy demo controls, NOT REQUIRED for the counter itself -->
    <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.6/jquery-ui.min.js"></script>
    <!-- Style sheet for the jQueryUI controls, NOT REQUIRED for the counter itself -->
    <link rel="stylesheet" type="text/css" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.6/themes/vader/jquery-ui.css" />
    <!-- Style sheet for the demo page, NOT REQUIRED for the counter itself -->
    <link rel="stylesheet" type="text/css" href="css/demo.css" />

Step-2 : Next job is to put some div tags where it will be displayed

<li>Increment:
            <span id="inc_value">123</span> <a href="#">[?]</a><div id="inc_slider"></div>
            <div>
                <p>This slider controls the counter increment by using the <b>setIncrement</b> method:</p>
                <code>myCounter.setIncrement(value);</code>
            </div>
        </li>

Step-3 : Our next job is to have some javascript customization

<script type="text/javascript">
    //<![CDATA[

    // Initialize a new counter
    var myCounter = new flipCounter('counter', {value:10000, inc:123, pace:800, auto:true});

    $(function(){

        /**
         * Demo controls
         */

        var smartInc = 0;

        // Increment
        $("#inc_slider").slider({
            range: "max",
            value: 123,
            min: 1,
            max: 1000,
            slide: function( event, ui ) {
                myCounter.setIncrement(ui.value);
                $("#inc_value").text(ui.value);
            }
        });

        // Pace
        $("#pace_slider").slider({
            range: "max",
            value: 800,
            min: 100,
            max: 1000,
            step: 100,
            slide: function( event, ui ) {
                myCounter.setPace(ui.value);
                $("#pace_value").text(ui.value);
            }
        });

        // Auto-increment
        $("#auto_toggle").buttonset();
        $("input[name=auto]").change(function(){
            if ($("#auto1:checked").length == 1){
                $("#counter_step").button({disabled: true});
                $(".auto_off_controls").hide();
                $(".auto_on_controls").show();

                myCounter.setPace($("#pace_slider").slider("value"));
                myCounter.setIncrement($("#inc_slider").slider("value"));
                myCounter.setAuto(true);
            }
            else{
                $("#counter_step").button({disabled: false});
                $(".auto_off_controls").show();
                $(".auto_on_controls").hide();
                $("#add_sub").buttonset();
                $("#set_val, #inc_to, #smart").button();
                myCounter.setAuto(false).stop();
            }
        });
        $("#counter_step").button({disabled: true});
        $("#counter_step").button().click(function(){
            myCounter.step();
            return false;
        });

        // Addition/Subtraction
        $("#add").click(function(){
            myCounter.add(567);
            return false;
        });
        $("#sub").click(function(){
            myCounter.subtract(567);
            return false;
        });

        // Set value
        $("#set_val").click(function(){
            myCounter.setValue(12345);
            return false;
        });

        // Increment to
        $("#inc_to").click(function(){
            myCounter.incrementTo(12345);
            return false;
        });

        // Get value
        $("#smart").click(function(){
            var steps = [12345, 17, 4, 533];

            if (smartInc < 4) runTest();

            function runTest(){
                var newVal = myCounter.getValue() + steps[smartInc];
                myCounter.incrementTo(newVal, 10, 400);
                smartInc++;
                if (smartInc < 4) setTimeout(runTest, 10000);
            }
            $(this).button("disable");
            return false;
        });

        // Expand help
        $("a.expand").click(function(){
            $(this).parent().children(".toggle").slideToggle(200);
            return false;
        });

    });

    //]]>
    </script>
</body>

Tuesday, 3 January 2012

How to track online status of a user in my website like facebook

I came across this when i was developing 1 of my social website aFriend.in.

I found out a very simple solution using jQuery or Javascript

setInterval("update()", 10000); // Update every 10 seconds 
function update() 
{ 
$.post("update.php"); // Sends request to update.php 
}

Your update.php file would have a bit of code like this:

session_start(); 
if ($_SESSION["userid"]) 
updateUserStatus($_SESSION["userid"]);

This all assumes that you store your userid as a session-variable when users login to your website. The updateUserStatus() function is just a simple query, like the following:

UPDATE users SET lastActiveTime = NOW() WHERE userid = $userid

So that takes care of your storage. Now to retrieve the list of users who are "online." For this, you'll want another jQuery-call, and another setInterval() call:

setInterval("getList()", 10000) // Get users-online every 10 seconds 
function getList() 
{ 
$.post("getList.php", function(list) 
{ $("listBox").html(list); }); 
}

This function requests a bit of HTML form the server every 10 seconds. The getList.php page would look like this:

session_start(); 
if (!$_SESSION["userid"]) die; // Don't give the list to anybody not logged in 
$users = getOnlineUsers(); /* Gets all users with lastActiveTime within the last 1 minute */ 
$output = "<ul>"; 
foreach ($users as $user) 
{ 
$output .= "<li>".$user["userName"]."</li>"; 
} 
$output .= "</ul>"; 
print $output;

That would output the following HTML:

<ul> <li>Jonathan Sampson</li> 
<li>Paolo Bergantino</li> 
<li>John Skeet</li> </ul>

That list is included in your jQuery variable named "list." Look back up into our last jQuery block and you'll see it there.

jQuery will take this list, and place it within a div having the classname of "listBox."

<div></div>

Saturday, 24 December 2011

Creating a Simple Photo Album with jQuery Similar to Facebook

For the javascript part, I’ve decided to use jQuery as well as the jquery.cycle

and jquery.lightbox plugins.

HTML structure

The HTML code needed for a gallery like this is actually rather simple. All we have to do, is to print the images as plain old linked HTML images and wrap image collections in container elements (DIVs).

<h1>My Photo Collection</h1>

<p id="intro">

This is my photo album...yaddi-yaddi-ya...

</p>

<div class="album">

<h2>Wicked Album</h2>

<a href="photos/image1.jpg">

<img src="photos/thumb_image1.jpg" alt="Lorem" />

</a>

<a href="photos/image2.jpg">

<img src="photos/thumb_image2.jpg" alt="Ipsum" />

</a>

<a href="photos/image3.jpg">

<img src="photos/thumb_image3.jpg" alt="Lorem" />

</a>

</div>

<div class="album">

<h2>Wickier Album</h2>

<a href="photos/image4.jpg">

<img src="photos/thumb_image4.jpg" alt="Ipsum" />

</a>

<a href="photos/image5.jpg">

<img src="photos/thumb_image5.jpg" alt="Yadi" />

</a>

<a href="photos/image6.jpg">

<img src="photos/thumb_image6.jpg" alt="Yadi" />

</a>

<a href="photos/image7.jpg">

<img src="photos/thumb_image7.jpg" alt="Ya" />

</a>

</div>

<div class="album">

<h2>Wickiestest Album</h2>

<a href="photos/image8.jpg">

<img src="photos/thumb_image8.jpg" alt="Lorem" />

</a>

<a href="photos/image9.jpg">

<img src="photos/thumb_image9.jpg" alt="Ipsum" />

</a>

</div>

The Magic of jQuery Plug-Ins

In order to turn this into something a bit more exciting than a bunch of linked images with a blue border, we add some JavaScript and CSS to the page.

First, make sure to include jQuery, jQuery Cycle and jQuery Lightbox to the page. Then add the following JavaScript code to another .js-file that is loaded into the same page:

$(document).ready( function() {

// Dynamically add nav buttons as these are not needed in non-JS browsers

var prevNext = '<div id="album-nav"><button ' +

'class="prev">« Previous' +

'</button><button>' +

'Next »</button></div>';

$(prevNext).insertAfter('.album:last');

// Add a wrapper around all .albums and hook jquery.cycle onto this

$('.album').wrapAll('<div id="photo-albums"></div>');

$('#photo-albums').cycle({

fx: 'turnDown',

speed: 500,

timeout: 0,

next: '.next',

prev: '.prev'

});

// Remove the intro on first click -- just for the fun of it

$('.prev,.next').click(function () {

$('#intro:visible').slideToggle();

});

// Add lightbox to images

$('.album a').lightBox();

});

You may of course remove the cycling effect.
The only JavaScript you’d then need is $('.album a').lightBox();.

Adding Style Info

Last, we add some style info to make our albums look at least somewhat good.

/** for this example, I don't give a rats (*) about IE */

.album {

width: 600px !important;

clear: both;

}

.album h2 {

clear: both;

}

.album a {

display: block;

float: left;

margin-right: 1em;

padding: 0.5em;

border: 1px solid black;

background-color: #eee;

text-align: center;

}

.album a:hover {

border-color: blue;

}

.album img {

width: 72px;

height: 100px;

border: 0;

}

#album-nav {

margin-top: 1em;

max-width: 500px;

}

.prev, .next {

border: 1px outset #ccc;

color: #000075;

background-color: white;

font-weight:bold;

padding: 0.25em;

}

.prev:hover,.next:hover {

border-style: inset;

}

.prev {

float: left;

}

.next {

float: right;

}

Finish!

Friday, 23 December 2011

facebook like red notification simple css technique

While developing my current web project, i came across a requirement which has to be lashed with a notification

similar style as facebook.

After puting some effort i found out the following implementation.

Here is a explanation of the above implementation using CSS and simple javascript.

The css

<style>

.noti_Container {
position:relative;
border:1px solid blue; /* This is just to show you where the container ends */
width:16px;
height:16px;
cursor: pointer;
}
.noti_bubble {
position:absolute;
top: -8px;
right:-6px;
padding-right:2px;
background-color:red;
color:white;
font-weight:bold;
font-size:0.80em;

border-radius:2px;
box-shadow:1px 1px 1px gray;
}

</style>

The HTML code

<div onclick="return f1();">
<img src="friends.png" style="border:none;"/>
<div id="n1">2</div>
</div>

The small javascript code to add some more functionality

<script>
function f1()
{
document.getElementById("n1").style.visibility='hidden';
}
</script>

The final implementation can be found here at http://fb.walletchange.com/profile.php

Thursday, 15 December 2011

Google plus like drag and drop adding groups

You might have marked a cool feature in google plus, where we add people to groups simply by dragging it to the perticular frame.

Here is a explanation of the above implementation using JQuery and PHP.

Google Plus Style Drag and Drop adding Groups

Sample database contains three tables and relationship between Members and Groups.

Members
Table contains members(users) data such as member_id, member_image and etc.

CREATE TABLE IF NOT EXISTS `members` (
`member_id` int(9) NOT NULL AUTO_INCREMENT,
`member_name` varchar(220) NOT NULL,
`member_image` text NOT NULL,
`dated` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
PRIMARY KEY (`member_id`)
);

Groups
Contains groups information.

CREATE TABLE IF NOT EXISTS `groups` (
`group_id` int(9)  AUTO_INCREMENT,
`group_name` varchar(220),
`sort` int(9),
`date` timestamp  DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
PRIMARY KEY (`group_id`),
KEY `sort` (`sort`)
);

User_group
Members and Groups table relationship table contains user_id(same as memeber_id), group_id, member_id() and sort(ordering)

CREATE TABLE IF NOT EXISTS `user_group` (
`id` int(9) NOT NULL AUTO_INCREMENT,
`user_id` int(9) NOT NULL,
`group_id` int(9) NOT NULL,
`member_id` int(9) NOT NULL,
`sort` int(9) NOT NULL,
PRIMARY KEY (`id`)
);

Javascript
Here draggable applying for two classes .members and .group

<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.6.2/jquery.js"></script>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.8.14/jquery-ui.js"></script>
<script type="text/javascript" src="jquery.livequery.min.js"></script>
<script type="text/javascript" >
$(function()
{
// Initiate draggable for public and groups
var $gallery = $( ".members, .group" );
$( "img", $gallery ).live("mouseenter", function()
{
var $this = $(this);
if(!$this.is(':data(draggable)'))
{
$this.draggable({
helper: "clone",
containment: $( "#demo-frame" ).length ? "#demo-frame" : "document",
cursor: "move"
});
}
});
// Initiate Droppable for groups
// Adding members into groups
// Removing members from groups
// Shift members one group to another
$(".group").livequery(function(){
var casePublic = false;
$(this).droppable({
activeClass: "ui-state-highlight",
drop: function( event, ui ) {
var m_id = $(ui.draggable).attr('rel');
if(!m_id)
{
casePublic = true;
var m_id = $(ui.draggable).attr("id");
m_id = parseInt(m_id.substring(3));
}
var g_id = $(this).attr('id');
dropPublic(m_id, g_id, casePublic);
$("#mem"+m_id).hide();
$( "<li></li>" ).html( ui.draggable ).appendTo( this );
},
out: function(event, ui) {
var m_id = $(ui.draggable).attr('rel');
var g_id = $(this).attr('id');
$(ui.draggable).hide("explode", 1000);
removeMember(g_id,m_id);
}
});
});
// Add or shift members from groups
function dropPublic(m_id, g_id,caseFrom)
{
$.ajax({
type:"GET",
url:"groups.php?m_id="+m_id+"&g_id="+g_id,
cache:false,
success:function(response){
$.get("groups.php?reload_groups", function(data){
$("#groupsall").html(data);
$("#added"+g_id).animate({"opacity" : "10" },10);
$("#added"+g_id).show();
$("#added"+g_id).animate({"margin-top": "-50px"}, 450);
$("#added"+g_id).animate({"margin-top": "0px","opacity" : "0" }, 450);
});
}
});
}
// Remove memebers from groups
// It will restore into public groups or non grouped members
function removeMember(g_id,m_id)
{
$.ajax({
type:"GET",
url:"groups.php?do=drop&mid="+m_id,
cache:false,
success:function(response){
$("#removed"+g_id).animate({"opacity" : "10" },10);
$("#removed"+g_id).show();
$("#removed"+g_id).animate({"margin-top": "-50px"}, 450);
$("#removed"+g_id).animate({"margin-top": "0px","opacity" : "0" }, 450);
$.get("groups.php?reload", function(data){ $("#public").html(data); });
}
});
}
});
</script>

groups.php

<?php
require_once("multipleDiv.inc.php");
// Initiate Object
$obj = new Multiplediv();
// Add or Update Ajax Call
if(isset($_GET['m_id']) and isset($_GET['g_id']))
{
$obj->addMembers((int)$_GET['m_id'], (int)$_GET['g_id']);
exit;
}
// Remove Memebers from groups Ajax call
if(isset($_GET['do']))
{
$obj->removeMember($_GET['mid']);
exit;
}
// Reload groups each ajax call
if(isset($_GET['reload'])){ echo $obj->getMembers_reload(); exit; }
if(isset($_GET['reload_groups'])){ echo $obj->getmembergroups_reload(); exit; }
// Initiate Groups and members
$members = $obj->public_members();
$groups = $obj->groups();
?>
Friends
<div id="main_portion">
<div id="public">
<!-- Initiate members -->
<?php
if(!isset($members))
$members = $obj->public_members();
if($members)
{
foreach($members as $member)
{
extract($member);
echo "<div class='members' id='mem".$member_id."'>\n";
echo "<img src='images/".$member_image."' rel='".$member_id."'>\n";
echo "<b>".ucwords($member_name)."</b>\n";
echo "</div>";
}
}
else
echo "Members not available";
?>
</div>
<div id="groupsall">
Groups
<!-- Initiate Groups -->
<?php
if(!isset($groups))
$groups = $obj->groups();
if($groups)
{
foreach($groups as $group)
{
extract($group);
echo "<div id='".$group_id."' class='group'>\n";
echo ucwords($group_name);
echo "<div id='added".$group_id."' class='add' style='display:none;' ><img src='images/green.jpg'></div>";
echo "<div id='removed".$group_id."' class='remove' style='display:none;' ><img src='images/red.jpg'></div>";
echo "<ul>\n";
echo $obj->updateGroups($group_id);
echo "</ul></div>";
}
}
?>

multipleDiv.inc.php
Download this and modify database connection credentials.

<?php
// Database declaration's
define("SERVER", "localhost");
define("USER", "username");
define("PASSWORD", "password");
define("DB", "database");class Multiplediv
{
........................
........................
.........................
}
?>

Saturday, 3 December 2011

Pagination with Jquery, PHP , Ajax and MySQL.

Friends, In my current employment i need to develop huge database driven web application. Which normally deals with millions of records. I use indexing and cache techniques. Along with that i use jquery to make it handy for end use.

Database
MySQL messages table contains two columns msg_id and message

CREATE TABLE messages
(
msg_id INT PRIMARY KEY AUTO_INCREMENT,
message VARCHAR(150)
);

JavaScript Code
This script works like a data controller.

<script type="text/javascript" src="http://ajax.googleapis.com/
ajax/libs/jquery/1.4.2/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function()
{function loading_show()
{
$('#loading').html("<img src='images/loading.gif'/>").fadeIn('fast');
}function loading_hide()
{
$('#loading').fadeOut();
}

function loadData(page)
{
loading_show();
$.ajax
({
type: "POST",
url: "load_data.php",
data: "page="+page,
success: function(msg)
{
$("#container").ajaxComplete(function(event, request, settings)
{
loading_hide();
$("#container").html(msg);
});
}
});
}
loadData(1); // For first time page load default results
$('#container .pagination li.active').live('click',function(){
var page = $(this).attr('p');
loadData(page);
});
});

</script>

load_data.php
Contains PHP coding. Displaying data from the messages table.

<?php
if($_POST['page'])
{
$page = $_POST['page'];
$cur_page = $page;
$page -= 1;
$per_page = 15; // Per page records
$previous_btn = true;
$next_btn = true;
$first_btn = true;
$last_btn = true;
$start = $page * $per_page;
include"db.php";
$query_pag_data = "SELECT msg_id,
message from messages LIMIT $start, $per_page";
$result_pag_data = mysql_query($query_pag_data) 
or die('MySql Error' . mysql_error());
$msg = "";
while ($row = mysql_fetch_array($result_pag_data))
{
$htmlmsg=htmlentities($row['message']); //HTML entries filter
$msg .= "<li><b>" . $row['msg_id'] . "</b> " . $htmlmsg . "</li>";
}
$msg = "<div class='data'><ul>" . $msg . "</ul></div>"; // Content for Data
/* -----Total count--- */
$query_pag_num = "SELECT COUNT(*) AS count FROM messages"; // Total records
$result_pag_num = mysql_query($query_pag_num);
$row = mysql_fetch_array($result_pag_num);
$count = $row['count'];
$no_of_paginations = ceil($count / $per_page);
/* -----Calculating the starting and endign values for the loop----- *///Some Code. Available in download script }
?>

Tuesday, 29 November 2011

Facebook Style Alert Confirm Box with jQuery and CSS

Create a facebook style alert box with jquery plug-in jquery.alert.js. Bellow is the complete tutorial

HTML / Javascript Code
Contains javascript and HTML Code.



<link href="facebook.alert.css" rel="stylesheet" type="text/css">

<script type="text/javascript"

src="http://ajax.googleapis.com/ajax/ libs/jquery/1.3.0/jquery.min.js"></script>

<script type="text/javascript" src="jquery.alert.js"></script>

<script type="text/javascript"> $(document).ready( function()

{ $("#delete_confirm").click( function()

{ jConfirm('Are you sure you want ot delete this thread?', '', function(r)

{ if(r==true) { $("#box").fadeOut(300); } }); }); });

</script>
<div id="box" style=" background-color:#ffffcc;">

<a href="#" id="delete_confirm">Delete</a>

</div>

facebook.alert.css
Contains CSS code.



#popup_container 

{

font-family:'Lucida Grande',arial;

font-weight:bold;

text-align:left;

font-size: 12px;

width: 364px;

height: 86px;

background: #F3F3F3;

border:solid 1px #dedede;

border-bottom: solid 2px #456FA5;

color: #000000; }
#popup_title 

{ display:none; }
#popup_message 

{ padding-top: 15px; padding-left: 15px; }
#popup_panel 

{ text-align: left; padding-left:15px; }
input

{

background-color:#476EA7;

padding:3px; color:#FFFFFF;

margin-top:20px;

margin-right:10px;

}

Saturday, 26 November 2011

Facebook Style Footer Admin Panel

The popularity of social media has been booming in the past few years and Facebook definitely has climbed high to the top of the social network rankings. Facebook has many Ajax driven features and applications that are very impressive, and one of the things I particularly like is the footer admin panel, where it neatly organizes frequently used links and applications.

This week I would like to cover part 1 of how to recreate the Facebook footer admin panel with CSS and jQuery.

Step 1. Wireframe and Tooltip Bubbles – HTML & CSS

Lay out the wireframe of the admin panel using an unordered list for the foundation. The last two list items (Alert Panel & Chat Panel) will have sub-panels nested within them. Since these two panels will float to the right, the order in the markup will be reversed.

Tooltip foundation

Notice that there is a <small> tag nested within the <a> tag, this is how we will achieve our tooltip bubble on the navigation.

HTML

<div id="footpanel">
    <ul id="mainpanel">
        <li><a href="#">Inspiration <small>
        Design Bombs</small></a></li>
        <li><a href="#">View Profile <small>
        View Profile</small></a></li>
        <li><a href="#">Edit Profile <small>
        Edit Profile</small></a></li>
        <li><a href="#">Contacts <small>
        Contacts</small></a></li>
        <li><a href="#">Messages (10) <small>
        Messages</small></a></li>
        <li><a href="#">Play List <small>
        Play List</small></a></li>
        <li><a href="#">Videos <small>
        Videos</small></a></li>
        <li id="alertpanel"><a href="#">
        Alerts</a></li>
        <li id="chatpanel"><a href="#">
        Friends (<strong>18</strong>)</a></li>
    </ul>
</div>

CSS

First start by fixing the panel to the bottom of the viewport.

#footpanel {
	position: fixed;
	bottom: 0; left: 0;
	z-index: 9999;
/*--Keeps the panel on top of all other elements--*/
	background: #e3e2e2;
	border: 1px solid #c3c3c3;
	border-bottom: none;
	width: 94%;
	margin: 0 3%;
}

As you may already know, IE6 does not understand fixed positioning. I stumbled across a tutorial that fixed this problem*.

*html #footpanel { /*--IE6 Hack - Fixed Positioning to the Bottom--*/
	margin-top: -1px;
/*--Prevents IE6 from having an infinity scroll bar - due to 1px border on #footpanel--*/
	position: absolute;
	top:expression(eval(
document.compatMode &&document.compatMode=='CSS1Compat')
?documentElement.scrollTop+(
documentElement.clientHeight-this.clientHeight)
: document.body.scrollTop +(
document.body.clientHeight-this.clientHeight));
}

*Note: Due to heavy loading on the browser, an alternative solution would be to either use an position: absolute; or if the situation/client allows it use display: none; for those with IE6.

Style the unordered list which will be the foundation of this panel.

#footpanel ul {
	padding: 0; margin: 0;
	float: left;
	width: 100%;
	list-style: none;
	border-top: 1px solid #fff;
/*--Gives the bevel feel on the panel--*/
	font-size: 1.1em;
}
#footpanel ul li{
	padding: 0; margin: 0;
	float: left;
	position: relative;
}
#footpanel ul li a{
	padding: 5px;
	float: left;
	text-indent: -9999px;
/*--For text replacement - Shove text off of the page--*/
	height: 16px; width: 16px;
	text-decoration: none;
	color: #333;
	position: relative;
}
html #footpanel ul li a:hover{	background-color: #fff; }
html #footpanel ul li a.active {
/*--Active state when sub-panel is open--*/
	background-color: #fff;
	height: 17px;
	margin-top: -2px;
/*--Push it up 2px to attach the active button to sub-panel--*/
	border: 1px solid #555;
	border-top: none;
	z-index: 200;
/*--Keeps the active link on top of the sub-panel--*/
	position: relative;
}

Declare the text replacement for each link.
You can download these great icons by Pinvoke here.

#footpanel a.home{
	background: url(home.png) no-repeat 15px center;
	width: 50px;
	padding-left: 40px;
	border-right: 1px solid #bbb;
	text-indent: 0;
/*--Reset text indent since there will be a
combination of both text and image--*/
}
a.profile{ background: url(user.png)
no-repeat center center;  }
a.editprofile{ background: url(wrench_screwdriver.png)
no-repeat center center; }
a.contacts{ background: url(address_book.png)
no-repeat center center; }
a.messages{ background: url(mail.png)
no-repeat center center; }
a.playlist{ background: url(document_music_playlist.png)
no-repeat center center; }
a.videos{ background: url(film.png)
no-repeat center center; }
a.alerts{ background: url(newspaper.png)
no-repeat center center; }
#footpanel a.chat{
	background: url(balloon.png)
no-repeat 15px center;
	width: 126px;
	border-left: 1px solid #bbb;
	border-right: 1px solid #bbb;
	padding-left: 40px;
	text-indent: 0;
/*--Reset text indent since there will be
a combination of both text and image--*/
}
#footpanel li#chatpanel, #footpanel li#alertpanel {
 float: right; }
/*--Right align the chat and alert panels--*/

Style the tooltip bubble, by default the <small> tag will be hidden with a display:none;. On hover over, allow the tooltip to appear with a display:block;

#footpanel a small {
	text-align: center;
	width: 70px;
	background: url(pop_arrow.gif) no-repeat center bottom;
	padding: 5px 5px 11px;
	display: none; /*--Hide by default--*/
	color: #fff;
	font-size: 1em;
	text-indent: 0;
}
#footpanel a:hover small{
	display: block; /*--Show on hover--*/
	position: absolute;
	top: -35px;
/*--Position tooltip 35px above the list item--*/
	left: 50%;
	margin-left: -40px; /*--Center the tooltip--*/
	z-index: 9999;
}

Friday, 25 November 2011

What is jQuery?

Since you've come to this page, you may already have a pretty good idea about what jQuery is, but to be on the safe side, here is a brief explanation. jQuery is a JavaScript framework, which purpose is to make it much easier to use JavaScript on your website. You could also describe jQuery as an abstraction layer, since it takes a lot of the functionality that you would have to write many lines of JavaScript to accomplish and wraps it into functions that you can call with a single line of code. It's important to note that jQuery does not replace JavaScript, and while it does offer some syntactical shortcuts, the code you write when you use jQuery is still JavaScript code. With that in mind, you should be aware that you don't need to be a JavaScript expert to use jQuery. In fact, jQuery tries to simplify a lot of the complicated things from JavaScript, like AJAX calls and DOM manipulation, so that you may do these things without knowing a lot about JavaScript. There are a bunch of other JavaScript frameworks out there, but as of right now, jQuery seems to be the most popular and also the most extendable, proved by the fact that you can find jQuery plugins for almost any task out there. The power, the wide range of plugins and the beautiful syntax is what makes jQuery such a great framework. Keep reading to know much more about it and to see why we recommend it.

Getting started

To use jQuery, you need to include it on the pages where you wish to take advantage of it. You can do this by downloading jQuery from their website at www.jquery.com. There is usually a choice between a "Production" version and a "Development" version. The first is for your live website, because it has been minified and compressed to take up the least amount of space, which is important for your visitors, whose browser will have to download the jQuery file along with the rest of your website. For testing and development, the "Development" version is best. It hasn't been minified or compressed, so when you run into an error, you can actually see where in jQuery it happens.

Once downloaded, you will have to reference the jQuery JavaScript file on your pages, using the <script> HTML tag. The easiest way is to place the downloaded jquery.js file in the same directory as the page from where you wish to use it and then reference it like this, in the section of your document:

<script type="text/javascript" src="jquery-1.5.1.js"></script>

A part of your page should now look something like this:

<head>
        <title>jQuery test</title>
        <script type="text/javascript" src="jquery-1.5.1.js"></script>
</head>

A more modern approach, instead of downloading and hosting jQuery yourself, is to include it from a CDN (Content Delivery Network). Both Google and Microsoft host several different versions of jQuery and other JavaScript frameworks. It saves you from having to download and store the jQuery framework, but it has a much bigger advantage: Because the file comes from a common URL that other websites may use as well, chances are that when people reaches your website and their browser requests the jQuery framework, it may already be in the cache, because another website is using the exact same version and file. Besides that, most CDN's will make sure that once a user requests a file from it, it's served from the server closest to them, so your European users won't have to get the file all the way from the US and so on.

You can use jQuery from a CDN just like you would do with the downloaded version, only the URL changes. For instance, to include jQuery 1.5.1 from Google, you would write the following:

<script type="text/javascript" 
 src="https://ajax.googleapis.com/ajax/libs/jquery/1.5.1/jquery.min.js"></script>

I suggest that you use this approach, unless you have a specific reason for hosting jQuery yourself. Here is a link to the jQuery CDN information from Google:

http://code.google.com/intl/da/apis/libraries/devguide.html#jquery

Or if you prefer to use it from Microsoft:

http://www.asp.net/ajaxlibrary/cdn.ashx#jQuery_Releases_on_the_CDN_0

Read on to learn how to start using jQuery.

Hello, world!

Every decent programming tutorial will start with a "Hello, world!" example and this tutorial is yet another one of them. In the previous chapter, we learned how to include jQuery on our page, so that we may start using all of its great features. You need to know a bit more about how jQuery works, before you can start writing your own code, but just to make sure that everything is working, and for you to see how simple jQuery is, let's kick off with a little example:

<div id="divTest1"></div>
<script type="text/javascript">
$("#divTest1").text("Hello, world!");
</script>

Okay, so we have a div tag with the id of "divTest1". In the JavaScript code we use the $ shortcut to access jQuery, then we select all elements with an id of "divTest1" (there is just one though) and set its text to "Hello, world!". You may not know enough about jQuery to understand why and how this works, but as you progress through this tutorial, all of the elements will be explained in detail.

Even such a simple task as this one would actually require quite a few extra keystrokes if you had to do it in plain JavaScript, with no help from jQuery:

<div id="divTest2"></div>
<script type="text/javascript">
document.getElementById("divTest2").innerHTML = "Hello, world!";
</script>

And it would be even longer if our HTML element didn't have an ID, but for instance just a class.

Normally though, you wait for the document to enter the READY state before you start manipulating its content. The above examples will work in most browsers and likely even work when you do more advanced stuff, but certain tasks may fail if you try to do them before the document is loaded and ready. Fortunately, jQuery makes this very easy as well, as we will see in the next chapter. After that, we will start looking into one of the most important aspects of jQuery, which has already been used in the above example: Selectors.

Method chaining

Yet another one of the really cool aspects of jQuery is the fact that most of the methods returns a jQuery object that you can then use to call another method. This allows you to do command chaining, where you can perform multiple methods on the same set of elements, which is really neat because it saves you and the browser from having to find the same elements more than once. Here's an example, and don't worry about the jQuery methods used in the following examples - they will be explained in later chapters:

<div id="divTest1"></div>
<script type="text/javascript">
        $("#divTest1").text("Hello, world!").css("color", "blue");
</script>

It works like this: We instantiate a new jQuery object and select the divTest1 element with the $ character, which is a shortcut for the jQuery class. In return, we get a jQuery object, allowing us to manipulate the selected element. We use that object to call the text() method, which sets the text of the selected element(s). This method returns the jQuery object again, allowing us to use another method call directly on the return value, which is the css() method.

We can add more method calls if needed, but at some point, the line of code will become quite long. Fortunately for us, JavaScript is not very strict when it comes to the syntax, so you can actually format it like you want, including linebreaks and indentations. For instance, this will work just fine as well:

<div id="divTest2"></div>
<script type="text/javascript">
        $("#divTest2").text("Hello, world!")
                                        .removeClass("blue")
                                        .addClass("bold")
                                        .css("color", "blue");                                  
</script>

JavaScript will simply throw away the extra whitespace when interpreting the code and execute it as one long line of code with several method calls.

Note that some methods doesn't return the jQuery object, while others only return it depending on the parameters you pass to it. A good example of that is the text() method used above. If no parameters are passed to it, the current text of the selected element(s) is returned instead of a jQuery object, while a single parameter causes jQuery to set the specified text and return a jQuery object.

Using elements, ID's and classes

The #id selector

A very common selector type is the ID based, which we saw in the "Hello, world" example. It uses the ID attribute of a HTML tag to locate the desired element. An ID should be unique, so you should only use this selector when you wish to locate a single, unique element. To locate an element with a specific ID, write a hash character, followed by the ID of the element you wish to locate, like this:

$("#divTest")

An example of it in use:

<div id="divTest"></div>
<script type="text/javascript">
$(function()
{
        $("#divTest").text("Test");
});
</script>

Now, while there is only a single element that matches our query above, you should be aware that the result is a list, meaning that it can contain more than one element, if the query matches more than one. A common example of this is to match all elements which uses one or several CSS classes.

The .class selector

Elements with a specific class can be matched by writing a . character followed by the name of the class. Here is an example:

<ul>
        <li class="bold">Test 1</li>
        <li>Test 2</li>
        <li class="bold">Test 3</li>
</ul>
<script type="text/javascript">
$(function()
{
        $(".bold").css("font-weight", "bold");
});
</script>

The element selector

You can also match elements based on their tag names. For instance, you can match all links on a page like this:

$("a")

Or all div tags like this:

$("div")

If you use a multi-element selector, like the class selector we used in the previous example, and we know that we're looking for elements of a specific type, it's good practice to specify the element type before the selector. Not only is it more precise, it's also faster for jQuery to process, resulting in more responsive sites. Here is a re-written version of the previous example, where we use this method:

$("span.bold").css("font-weight", "bold");

This will match all span elements with "bold" as the class. Of course, it can be used with ID's and pretty much all of the other selectors as well.

Selectors can do much more for you though. Read on for more cool examples.

Using attributes

In the previous chapter, we saw how we could find elements in a page from their class or their ID. These two properties are related because of the fact that you can use them to style the elements with CSS, but with jQuery, you can actually find elements based on any kind of attribute. It comes with a bunch of attribute selector types and in this article, we will look into some of them.

Find elements with a specific attribute

The most basic task when selecting elements based on attributes is to find all the elements which has a specific attribute. Be aware that the next example doesn't require the attribute to have a specific value, in fact, it doesn't even require it to have a value. The syntax for this selector is a set of square brackets with the name of the desired attribute inside it, for instance [name] or [href]. Here is an example:

<span title="Title 1">Test 1</span><br />
<span>Test 2</span><br />
<span title="Title 3">Test 3</span><br />

<script type="text/javascript">
$(function()
{
        $("[title]").css("text-decoration", "underline");
});
</script>

We use the attribute selector to find all elements on the page which has a title attribute and then underline it. As mentioned, this will match elements with a title element no matter what their value is, but sometimes you will want to find elements with a specific attribute which has a specific value.

Find elements with a specific value for a specific attribute

Here's an example where we find elements with a specific value:

<a href="http://www.google.com" target="_blank">Link 1</a><br />
<a href="http://www.google.com" target="_self">Link 2</a><br />
<a href="http://www.google.com" target="_blank">Link 3</a><br />

<script type="text/javascript">
$(function()
{
        $("a[target='_blank']").append(" [new window]");
});
</script>

The selector simply tells jQuery to find all links (the a elements) which has a target attribute that equals the string value "_blank" and then append the text "[new window]" to them. But what if you're looking for all elements which don't have the value? Inverting the selector is very easy:

$("a[target!='_blank']").append(" [same window]");

The difference is the != instead of =, a common way of negating an operator within many programming languages.

And there's even more possibilities:

Find elements with a value which starts with a specific string using the ^= operator:

$("input[name^='txt']").css("color", "blue");

Find elements with a value which ends with a specific string using the $= operator:

$("input[name$='letter']").css("color", "red");

Find elements with a value which contains a specific word:

$("input[name*='txt']").css("color", "blue");

Parent/child relation selectors

jQuery also allows you to select elements based on their parent element. There are two variations: One which will only match elements which are a direct child to the parent element, and one which will match all the way down through the hierarchy, e.g. a child of a child of a child of a parent element.

The syntax for finding children which are direct descendants of an element looks like this:

$("div > a")

This selector will find all links which are the direct child of a div element. Replacing the greater-than symbol with a simple space will change this to match all links within a div element, no matter if they are directly related or not:

$("div a")

Here's an example where we color bold tags blue if they are directly descending from the first test area:

<div id="divTestArea1">
        <b>Bold text</b>
        <i>Italic text</i>
        <div id="divTestArea2">
                <b>Bold text 2</b>
                <i>Italic text 2</i>
                <div>
                        <b>Bold text 3</b>
                </div>
        </div>
</div>

<script type="text/javascript">
$("#divTestArea1 > b").css("color", "blue");
</script>

As you will see, only the first bold tag is colored. Now, if you had used the second approach, both bold tags would have been colored blue. Try the following example, where the only thing changed is the greater-than character which has been replaced with a space, to note that we also accept non-direct descendants or "grand children" as they are sometimes called:

<div id="divTestArea1">
        <b>Bold text</b>
        <i>Italic text</i>
        <div id="divTestArea2">
                <b>Bold text 2</b>
                <i>Italic text 2</i>
                <div>
                        <b>Bold text 3</b>
                </div>
        </div>
</div>

<script type="text/javascript">
$("#divTestArea1 b").css("color", "blue");
</script>

Now the cool thing is that you can actually go back up the hierarchy if needed, using the parent() method. We'll look into that in another chapter of this tutorial.

Fading elements

Doing simple animation is very easy with jQuery. One of the effects it supports out-of-the-box, is fading an element in and out of visibility. Here's a simple example, where we fade in an otherwise hidden box, using the fadeIn() method:

<div id="divTestArea1" style="padding: 50px;
background-color: #89BC38; text-align: center; display: none;">
        <b>Hello, world!</b>
</div>
<a href="javascript:void(0);" onclick="ShowBox();">Show box</a>
<script type="text/javascript">
function ShowBox()
{
        $("#divTestArea1").fadeIn();
}
</script>

You can fade a lot of different elements, like divs, spans or links. The fadeIn() method can take up to three parameters. The first one allows you to specify the duration of the effect in milliseconds, or "fast" or "slow", which is the same as specifying either 200 or 600 milliseconds. Here's an example of it in use:

<div id="divTestArea21" style="width: 50px; height: 50px; display: none;
background-color: #89BC38;"></div>
<div id="divTestArea22" style="width: 50px; height: 50px; display: none;
background-color: #C3D1DF;"></div>
<div id="divTestArea23" style="width: 50px; height: 50px; display: none;
background-color: #9966FF;"></div>
<a href="javascript:void(0);" onclick="ShowBoxes();">Show boxes</a>
<script type="text/javascript">
function ShowBoxes()
{
        $("#divTestArea21").fadeIn("fast");
        $("#divTestArea22").fadeIn("slow");
        $("#divTestArea23").fadeIn(2000);
}
</script>

Don't mind all the HTML, it's just there so that you can see the difference between the fading durations. Now, the second parameter can either be the name of an easing function (which we won't use in this tutorial) or a callback function that you may supply, to be called once the effect is done. Here's an example of that, combined with the use of the fadeOut() method, which obviously has the reverse effect of fadeIn():

<div id="divTestArea3" style="width: 50px; height: 50px; display: none;
background-color: #89BC38;"></div>
<script type="text/javascript">
$(function()
{
        $("#divTestArea3").fadeIn(2000, function()
        {
                $("#divTestArea3").fadeOut(3000);
        });
});
</script>

There may be situations where you want to fade an element in our out depending on its current state. You could of course check if it is visible or not and then call either fadeIn() or fadeOut(), but the nice jQuery developers have supplied us with a specific method for toggling an element, called fadeToggle(). It takes the same parameters as fadeIn() and fadeOut(), so it's very easy to use. Here's a little example:

<div id="divTestArea4" style="width: 50px; height: 50px; display: none;
background-color: #89BC38;"></div><br />
<a href="javascript:void(0);" onclick="ToggleBox();">Toggle box</a>
<script type="text/javascript">
function ToggleBox()
{
        $("#divTestArea4").fadeToggle("slow");  
}
</script>

And that's how easy it is to use the fading effects of jQuery.

Sliding elements

In the previous chapter, we saw how we could fade elements in and out of visibility using the fading methods of jQuery. However, sometimes a sliding effect is a better choice, and for that, jQuery has a set of matching methods for doing just that. Let's kick off with a simple example of it, where we use the slideDown() method:

<div id="divTestArea1" style="padding: 50px;
background-color: #89BC38; text-align: center; display: none;">
        <b>Hello, world!</b>
</div>
<a href="javascript:void(0);" onclick="ShowBox();">Show box</a>
<script type="text/javascript">
function ShowBox()
{
        $("#divTestArea1").slideDown();
}
</script>

For hiding the box again, we can use the slideUp() method. They both take the same set of parameters, which are all optional. The first parameter allows you to specify a duration for the effect in milliseconds, or "fast" or "slow", which is the same as specifying either 200 or 600 milliseconds.Let's try an example where we do just that:

<div id="divTestArea21" style="width: 50px; height: 50px;
display: none; background-color: #89BC38;"></div>
<div id="divTestArea22" style="width: 50px; height: 50px;
display: none; background-color: #C3D1DF;"></div>
<div id="divTestArea23" style="width: 50px; height: 50px;
display: none; background-color: #9966FF;"></div>
<a href="javascript:void(0);" onclick="ShowBoxes();">Show boxes</a>
<script type="text/javascript">
function ShowBoxes()
{
        $("#divTestArea21").slideDown("fast");
        $("#divTestArea22").slideDown("slow");
        $("#divTestArea23").slideDown(2000);
}
</script>

There's a bit more HTML than usual, but that's only there for you to be able to see the different paces in which the boxes are shown. Notice how the first box is there almost instantly, the second box is pretty close and the third box is slower, because it uses a full two seconds to slide down.

Now, the second parameter can either be the name of an easing function (which we won't use in this tutorial) or a callback function that you may supply, to be called once the effect is done. Here's an example of that, combined with the use of the slideUp() method:

<div id="divTestArea3" style="width: 50px; height: 50px;
display: none; background-color: #89BC38;"></div>
<script type="text/javascript">
$(function()
{
        $("#divTestArea3").slideDown(2000, function()
        {
                $("#divTestArea3").slideUp(3000);
        });
});
</script>

The ability to do this can be very useful for combining several effects, as you can see. In this example, the callback function we supply will be called as soon as the slideDown() method is completely finished and then the slideUp() method is called.

In case you want to simply slide an element up or down depending on its current state, the jQuery developers have provided us with a nice slideToggle() method for doing just that. Check out the next example, where we use it:

<div id="divTestArea4" style="width: 50px; height: 50px;
display: none; background-color: #89BC38;"></div><br />
<a href="javascript:void(0);" onclick="ToggleBox();">Toggle box</a>
<script type="text/javascript">
function ToggleBox()
{
        $("#divTestArea4").slideToggle("slow");
}
</script>

Getting and setting content [text(), html() and val()]

The simplest aspect of DOM manipulation is retrieving and setting text, values and HTML. These three things might seem like the same thing, but they're not. Text is a textual (no HTML) representation of the inner content for all regular elements, values are for form elements and HTML is the same as text, but including any markup.

Fortunately for us, jQuery comes with a method for each of the three, allowing us to both retrieve and set these properties: The text(), html() and val() methods. Here's a little example which will show you the difference between them and how simple they are to use:

<div id="divTest">
        <b>Test</b>
        <input type="text" id="txtTest" name="txtTest" value="Input field" />
</div>

<script type="text/javascript">
$(function()
{
        alert("Text: " + $("#divTest").text());
        alert("HTML: " + $("#divTest").html());
        alert("Value: " + $("#divTest").val());

        alert("Text: " + $("#txtTest").text());
        alert("HTML: " + $("#txtTest").html());
        alert("Value: " + $("#txtTest").val());
});
</script>

So a call to one of these methods with no parameters will simply return the desired property. If we want to set the property instead, we simply specify an extra parameter. Here's a complete example:

<div id="divText"></div>
<div id="divHtml"></div>
<input type="text" id="txtTest" name="txtTest" value="Input field" />

<script type="text/javascript">
$(function()
{
        $("#divText").text("A dynamically set text");
        $("#divHtml").html("<b><i>A dynamically set HTML string</i></b>");
        $("#txtTest").val("A dynamically set value");
});
</script>

And that's how easy it is to set text, HTML and values.

These three functions comes with one overload more though, where you specify a callback function as the first and only parameter. This callback function will be called with two parameters by jQuery, the index of the current element in the list of elements selected, as well as the existing value, before it's replaced with a new value. You then return the string that you wish to use as the new value from the function. This overload works for both html(), text() and val(), but for the sake of simplicity, we only use the text() version in this example:

<p>Paragraph 1</p>
<p>Paragraph 2</p>
<p>Paragraph 3</p>

<script type="text/javascript">
$(function()
{
        $("p").text(function(index, oldText) {
                return "Existing text: " + oldText + ". New text:
                A dynamically set text (#" + index + ")";
        });
});
</script>

We start out with three similar paragraph elements, which text is their only difference. In the jQuery code, we select all of them and then use the special version of the text() method to replace their current text with a newly constructed text, based on the two parameters that jQuery provides for us: The index of the current element as well as its current text. This new text is then returned to jQuery, which will replace the current text with the new one.

Getting and setting attributes [attr()]

In the previous chapter, we saw how easy it was to get and set text and HTML content from and to an element. Fortunately, changing one or more attributes of an element is just as easy. We use the attr() method for this, which in its simplest form takes one parameter: The name of the attribute we wish to get:

<a href="http://www.google.com" id="aGoogle1">Google Link</a>
<script type="text/javascript">
$(function()
{
        alert($("#aGoogle1").attr("href"));
});
</script>

In this example, we get the value of the "href" attribute of our link and then show it to the user. To change an attribute, we simply specify an extra parameter:

<a href="http://www.google.com" id="aGoogle2">Google Link</a>
<script type="text/javascript">
$(function()
{
        $("#aGoogle2").attr("href", "http://www.google.co.uk");
});
</script>

This will change the link to point to the British version of Google. The attr() method can also take a map of name/value pairs, for setting multiple attributes at the same time. Here we set both the href and the title attributes simultaneously:

<a href="http://www.google.com" id="aGoogle3">Google Link</a>
<script type="text/javascript">
$(function()
{
        $("#aGoogle3").attr(
        {
                "href" : "http://www.google.co.uk",
                "title" : "Google.co.uk"
        });
});
</script>

The attr() method also supports the special overload where the value parameter is instead a callback function, allowing you to access the index of the element selected as well as the existing attribute value. Here's an example of just that:

<a href="http://www.google.com/" class="google">Google.com</a><br />
<a href="http://www.google.co.uk/" class="google">Google UK</a><br />
<a href="http://www.google.de/" class="google">Google DE</a><br />

<script type="text/javascript">
$(function()
{
        $("a.google").attr("href", function(index, oldValue)
        {
                return oldValue + "imghp?tab=wi";
        });
});
</script>

We simply change all the Google links to point to the Image search instead of the default page, by adding an extra parameter to the href attribute. In this example we don't really use the index parameter, but we could have if we needed it, to tell us which index in the list of elements selected we're currently dealing with.

top_menu

Thursday, 26 January 2012

Wednesday, 18 January 2012

Step-1 : We start by adding some jquery plugins and css to our page

Step-2 : Next job is to put some div tags where it will be displayed

Step-3 : Our next job is to have some javascript customization

Tuesday, 3 January 2012

Saturday, 24 December 2011

HTML structure

The Magic of jQuery Plug-Ins

Adding Style Info

Friday, 23 December 2011

The css

The HTML code

The small javascript code to add some more functionality

Thursday, 15 December 2011

Saturday, 3 December 2011

Tuesday, 29 November 2011

Saturday, 26 November 2011

Step 1. Wireframe and Tooltip Bubbles – HTML & CSS

HTML

CSS

Friday, 25 November 2011

The #id selector

The .class selector

The element selector

Find elements with a specific attribute

Find elements with a specific value for a specific attribute