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By mswatcher
via encosia.com
Published: Jan 12 2012 / 12:00

The question of how to retroactively add hooks before and/or after a pre-existing JavaScript function executes is one that comes up from time to time. Whether it’s a simple method like tmpl(), a server-generated script artifact, or a function in a third-party script, sometimes it’s desirable to alter a JavaScript function without access to change the original declaration of the function.
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