Run results for: jQuery CSS3 :not vs .not()

Run details:

User agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:56.0) Gecko/20100101 Firefox/56.0

Browser: Firefox 56

Operating system: Windows 7

Device Platform: Desktop

Date tested: 6 years ago

Test name	Executions per second
CSS3 Selector	230466.4 Ops/sec
.not() Method	132247.1 Ops/sec

HTML Preparation code:

<div id="container">
  <div id="header">Header</div>
  <div>Div</div>
</div>
<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js'></script>

Tests:

CSS3 Selector
var d = $('div:not(#header)');
.not() Method
var d = $('div').not('#header');

Run results for: jQuery CSS3 :not vs .not()

Using jQuery 3.3.1, compare speed of CSS3 pseudo-class :not versus .not() method.

CSS3 Selector

.not() Method