Toggle Ordered/ Unordered List Using jQuery

So let us say you have a tree like structure created with a bunch of <ul> and <li>. Now you come across a requirement where you need to expand and collapse these sections. Let us see how to do this using jQuery (tested on IE and Firefox)

<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

    <title></title>

    <style type="text/css">

        .clsUL

            cursor:hand;

    </style>

    <script src="Scripts/jquery-1.2.6.js" type="text/javascript">

    </script>

    <script type="text/javascript">

        $(document).ready(function(){

        $('#unord li').click(function() {

                    $(this).children('ul').slideToggle("slow");

});

});

    </script>

</head>

<body>

    <form id="form1" runat="server">

    <div>

    <ul id="unord" class="clsUL">

        <li>Client-Side Languages

            <ul>

                <li>

                    jQuery

                </li>

                <li>

                    JavaScript

                </li>

                <li>

                    JScript

                </li>

            </ul>

        </li>

        <li>Server-Side Languages

            <ul>

                <li>

C#

                </li>

                <li>

                    VB.NET

                </li>

                <li>

                    Others

                </li>

            </ul>

        </li>

    </ul>

    </div>

    </form>

</body>

</html>

The code shown above, collapses and expands the section of <li> kept inside <ul>. Needless to say, jQuery rocks!

About The Author

Suprotim Agarwal, Developer Technologies MVP (Microsoft Most Valuable Professional) is the founder and contributor for DevCurry, DotNetCurry and SQLServerCurry. He is the Chief Editor of a Developer Magazine called DNC Magazine. He has also authored two Books - 51 Recipes using jQuery with ASP.NET Controls. and The Absolutely Awesome jQuery CookBook.

Follow him on twitter @suprotimagarwal.

3 comments:

Anonymous said...: Very very helpful.Thanks.; January 12, 2009 at 10:42 PM
Tim Cadieux said...: By far the easiest to use i've seen. 1 question - how to collapse all at initial page load?; November 3, 2010 at 12:48 PM
Anonymous said...: I'd also like to know how to collapse all on initial load.; March 15, 2011 at 8:12 AM