jQuery attr vs Vanilla JS - revised

JavaScript performance comparison

Revision 2 of this test case created

Preparation code

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js">
  <li id="item1">
    Item 1 with id attribute
  <li id="item2">
    Item 2 with id attribute
  <li id="item3">
    Item 3 with id attribute

Preparation code output

  • Item 1 with id attribute
  • Item 2 with id attribute
  • Item 3 with id attribute

Test runner

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Testing in unknown unknown
Test Ops/sec
Get id attribute using jQuery
$('li').each(function() {
  var itemId = $(this).attr('id');
Get id attribute using Vanilla JS
$('li').each(function(index, element) {
  var itemId = element.id;
Get id from jQuery DOM element
$('li').each(function(index, element) {
  var itemId = $(element).id;

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