How to implement degradable tabs using jQuery

Post by **Neo** » Mon Mar 01, 2010 1:25 am

Creating tabbed content is easy with jQuery UI. Using a simple HTML layout and calling the tabs function is all it takes. Here, I'll show you how to make a degradable tabbed interface. That is, we'll make it so the page is still readable when JavaScript is disabled. This involves hiding and showing elements using JavaScript before enabling tabs.

Here is the HTML of the tab widget. By default, UI tabs use an unordered list with anchor links as the tabs and corresponding div tags with the content. The list starts hidden and will be shown with JavaScript, and each section has a heading that we will hide if JavaScript is enabled.

Code: Select all

<div class="tabs">
  <ul class="tabmenu hidden">
    <li><a href="#tab-1">Tab 1</a></li>
    <li><a href="#tab-2">Tab 2</a></li>
    <li><a href="#tab-3">Tab 3</a></li>
    <li><a href="#tab-4">Tab 4</a></li>
  </ul>
  <div id="tab-1">
    <h2>Tab 1</h2>
    <p>Content of tab 1</p>
  </div>
  <div id="tab-2">
    <h2>Tab 2</h2>
    <p>Content of tab 2</p>
  </div>
  <div id="tab-3">
    <h2>Tab 3</h2>
    <p>Content of tab 3</p>
  </div>
  <div id="tab-4">
    <h2>Tab 4</h2>
    <p>Content of tab 4</p>
  </div>
</div>

We only need one CSS class to apply to hidden elements:

Code: Select all

.hidden {
    display: none;
}

Here's the JavaScript. The first line shows the tab menu, the second line hides the headings, and the last line enables the tabs.

Code: Select all

$(function() {
    $(".tabmenu").removeClass("hidden");
    $(".tabs h2").addClass("hidden");
    $(".tabs").tabs();
});

Finally, here is the complete example page:

Code: Select all

<!DOCTYPE html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<style type="text/css">
.hidden {
    display: none;
}
</style>
<link rel="stylesheet" type="text/css" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.7.2/themes/ui-lightness/jquery-ui.css" />
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jqueryui/1/jquery-ui.min.js"></script>
<script type="text/javascript">
$(function() {
    $(".tabmenu").removeClass("hidden");
    $(".tabs h2").addClass("hidden");
    $(".tabs").tabs();
});
</script>
<title>Degradable jQuery UI Tabs</title>
</head>
<body>
<h1>Degradable jQuery UI Tabs</h1>
<div class="tabs">
  <ul class="tabmenu hidden">
    <li><a href="#tab-1">Tab 1</a></li>
    <li><a href="#tab-2">Tab 2</a></li>
    <li><a href="#tab-3">Tab 3</a></li>
    <li><a href="#tab-4">Tab 4</a></li>
  </ul>
  <div id="tab-1">
    <h2>Tab 1</h2>
    <p>Content of tab 1</p>
  </div>
  <div id="tab-2">
    <h2>Tab 2</h2>
    <p>Content of tab 2</p>
  </div>
  <div id="tab-3">
    <h2>Tab 3</h2>
    <p>Content of tab 3</p>
  </div>
  <div id="tab-4">
    <h2>Tab 4</h2>
    <p>Content of tab 4</p>
  </div>
</div>
</body>
</html>