jQuery.get vs <script async src="...">

Question

If you're using jQuery, is there any reason to use one of these methods to load a JavaScript file rather than the other?

$.getScript('https://apis.google.com/js/platform.js');

vs

(function() {
  var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true;
  po.src = 'https://apis.google.com/js/platform.js';
  var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s);
})();

There is no functional difference between those two examples. But getScript is obviously shorter and provides an optional callback too. async = true is the default option and is redundant in the code. — CodingIntrigue
– CodingIntrigue, Commented May 25, 2014 at 19:54

Benjamin Gruenbaum · Accepted Answer · 2014-05-25 20:04:59Z

1

Yes. $.getScript performs a "script" $.ajax request and runs through the $.ajax pipeline, so if you register any settings and handlers through $.ajaxSetup or $.ajaxError they will run.

For example, the following will cause scripts from $.getScript to be cached to the local memory:

$.ajaxSetup({
  cache: true
});

answered May 25, 2014 at 20:04

Benjamin Gruenbaum

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