If you want to View source code of web page using Javascript then here is  a simple example just copy and paste the script below to your webpage and press the View Source button.

<form action="#" onsubmit="return getsource();">
<input type="submit" value="View Source!" />
</form>
<script type="text/javascript" >
function getsource()
{
 var thesource= "view-source:" + window.location;
 window.open(thesource, 'source_code', 'width=400, height=400, resizable=1, scrollbars=1');
 return false;
}</script>

This script will work on Mozilla and Chrome. IE hate this script :P

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