Simple Style Switcher using jQuery and CSS

Introduction


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This article shows how to create simple style switcher using jQuery and CSS. Look at the animated image below that we are going to produce.

 

Creating HTML Body


Look at the body that I'll be using; you need to create the same.

<body>
    <div id="NoStyleDIV" class="switcher">
    <b>Style Switcher</b>
    <br /><br />
        <button id="switcher-default">
            Default
        </button>
        <button id="switcher-red">
            Red
        </button>
        <button id="switcher-blue">
            Blue
        </button>
        <button id="switcher-green">
            Green
        </button>
    </div>

    <br /><br />

    <div id="data">
        <b>What is ITORIAN?</b>
        <p>
            Actually, few years ago I decided to read every Computer Science and its Programming books ever written. Almost all basics/fundamentals languages I finished before taking admission in school or college. In year 2007-2008 I've taken admission in Bachelor (Computer Application) for some certificates. And now in 2011, I completed my Bachelor's and now pursuing M.Sc.(IT).
        </p>
        <p>
            Along all the way, I kept my each and every notes in computer and these notes eventually became ITORIAN after many revisions. And now, ITORIAN is a tangible record of my own thoughts about Computer and its Programming.
        </p>
    </div>
</body>

Creating Style

If you done with above the, move next and create style for it. We need a style that we will apply (add) to body of the page when we click button. Let's create the style:

    <style type="text/css">
        .red
        {
            color:Red;
        }
        .blue
        {
            color:Blue;
        }
        .green
        {
            color:Green;
        }
        .switcher
        {
            background-color:Gray;
            width:310px;
            padding:10px;
        }
    </style>

In the above style, I have created separate CSS classes for red, blue, green and switcher class is especially for a <div> tag that holds all of the buttons. You can add some more styles in each of the classes given above.

Creating jQuery Functions

If you done with above all then create jQuery functions for button clicks. Here you go.

    <script type="text/javascript">
        $(document).ready(function () {
            $('#switcher-default').bind('click', function () {
                $('body').removeClass();
                $("#NoStyleDIV").css("color", "Black");
            });
            $('#switcher-red').bind('click', function () {
                $('body').addClass('red');
                $('body').removeClass('blue');
                $('body').removeClass('green');
                $('body').removeClass('yellow');
                $("#NoStyleDIV").css("color", "Black");
            });
            $('#switcher-blue').bind('click', function () {
                $('body').addClass('blue');
                $('body').removeClass('red');
                $('body').removeClass('green');
                $('body').removeClass('yellow');
                $("#NoStyleDIV").css("color", "Black");
            });
            $('#switcher-green').bind('click', function () {
                $('body').addClass('green');
                $('body').removeClass('red');
                $('body').removeClass('blue');
                $('body').removeClass('yellow');
                $("#NoStyleDIV").css("color", "Black");
            });
        });
    </script>

Note: Remember to add the reference of the jQuery file on your page to support above functions.

Let's talk on distinct code that I have used above.

$('#switcher-red').bind('click', function () {

Using #switcher-red, I'm selecting the button control by id and then binding a function to its click event.

$('body').addClass('red');

In above code, I'm selecting the body tag of the page, remember I have not used any . or # operator because tag is being selected itself, so we don't need to used . or #. And adding a CSS class named 'red' with the body tag.

$('body').removeClass('green');

Using removeClass(), I'm just removing the pre-added class from the body tag.

$("#NoStyleDIV").css("color", "Black");

# is id selector, so by using above line I'm adding a CSS to NoStyleDIV named div tag. Look in above code; I have placed my all buttons inside this <div> and I don't want to apply any style to that particular <div> tag whenever button clicks.

Download the sample project attached with this article and test it yourself.


I hope you like it. Thanks.

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