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>

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

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");