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In this video, I cover the JavaScript function replace(). The function allows you to search for a string (by matching a regular expression) and replace that string. The replacement can be a literal string itself or you can pass in a callback where you can use logic and programming to generate a replacement string based on anything you can imagine.

This is the ninth video in a series on Regular Expressions, which is part of the “Programming from A to Z” course at ITP (

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Links discussed in this video:
MDN’s Regular Expressions Reference:
Regular Expressions on Wikipedia:
Book Mastering Regular Expressions:
ITP from Tisch School of the Arts:

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