Run results for: jQuery vs Vanilla -LOAD

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:63.0) Gecko/20100101 Firefox/63.0

Browser: Firefox 63

Operating system: Linux

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
jQuery AJAX	3654.7 Ops/sec
Vanilla JS	7126.7 Ops/sec

HTML Preparation code:

<script src="//ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>

Tests:

jQuery AJAX
var url = "http://example.com/" $.ajax({ url: url, dataType: "script", cache: true });
Vanilla JS
var url = "http://example.com/" function loadScript(url, callback){ var script = document.createElement("script") script.type = "text/javascript"; if (script.readyState){ //IE script.onreadystatechange = function(){ if (script.readyState == "loaded" || script.readyState == "complete"){ script.onreadystatechange = null; callback(); } }; } else { //Others script.onload = function(){ callback(); }; } script.src = url; document.getElementsByTagName("head")[0].appendChild(script); } loadScript(url, function(){ //initialization code });