Is it necessary to disable caching in the browser while making changes to Javascript code?

When making changes to Javascript code, it is often necessary to disable caching in the browser to ensure that the latest version of the code is being loaded and executed. This can be done by adding cache-control headers to the HTTP response, instructing the browser not to cache the Javascript files. 

<?php
header("Cache-Control: no-cache, must-revalidate"); // HTTP 1.1
header("Pragma: no-cache"); // HTTP 1.0
header("Expires: Sat, 26 Jul 1997 05:00:00 GMT"); // Date in the past
?>

Keywords

browser caching JavaScript code changes disable PHP

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