The yepnope.js is a JavaScript library that allows us an asynchronous conditional resource loading in according with conditions been tested on the client side.

The following is the code that I was using in this video clip. Make sure you update the link to the JavaScript files before you run it.

<!DOCTYPE html>
<html>
<head>
    <title>yepnope sample</title>
    <script type="text/javascript" src="yepnope.js">
    </script>
    <script type="text/javascript" src="modernizr.js">
    </script>
    <script type="text/javascript">
        yepnope({
            test : Modernizr.websqldatabase,
            yep  : 'a.js',
            nope : 'b.js',
            complete : function () {doSomething();}
        });
    </script>
</head>
<body>
</body>
</html>

You can find the complete sample with all the other files it uses as well as slides and video clips for learning how to use this library in my new yepnope.js basics free course at http://abelski.lifemichael.com.

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