Run details:
Mozilla/5.0 (Linux; Android 10; Pixel 3 XL) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.79 Mobile Safari/537.36
Chrome Mobile 79
Android
Mobile
5 years ago
Test name Executions per second
getElementById() 2077037.8 Ops/sec
getElementsByClassName() 1161082.8 Ops/sec
getElementsByTagName() 1575246.6 Ops/sec
querySelector(#id) 1168710.2 Ops/sec
querySelector(.id) 1582743.6 Ops/sec
querySelectorAll(#id) 565776.9 Ops/sec
querySelectorAll(.id) 746795.0 Ops/sec
jQuery(#id) 722772.3 Ops/sec
jQuery(.id) 441799.6 Ops/sec
jQuery(tag#id) 251262.1 Ops/sec
jQuery(tag.id) 253254.0 Ops/sec
jQuery + getElementById 890406.1 Ops/sec
jQuery + getElementsByClassName 302425.8 Ops/sec
HTML Preparation code:
AخA
 
1
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.min.js"><script>
2
<script>jQuery.noConflict();</script>
3
<script src="https://cdnjs.cloudflare.com/ajax/libs/cash/7.0.3/cash.min.js"></script>
4
<div id="foo" class="foo2"></div>
Tests:
  • getElementById

     
    var el = document.getElementById("foo");
    var className = el.className;
  • getElementsByClassName

     
    var el = document.getElementsByClassName("foo2");
    var className = el.className;
  • getElementsByTagName

     
    var el = document.getElementsByTagName("div")[0];
    var className = el.className;
  • querySelector (#id)

     
    var el = document.querySelector('#foo');
    var className = el.className;
  • querySelector (.id)

     
    var el = document.querySelector('.foo2');
    var className = el.className;
  • querySelectorAll (#id)

     
    var el = document.querySelectorAll('#foo');
    var className = el.className;
  • querySelectorAll (.id)

     
    var el = document.querySelectorAll('.foo2');
    var className = el.className;
  • Cash (#id)

     
    var el = $("#foo");
    var className = el.className;
  • Cash (.id)

     
    var el = $(".foo2");
    var className = el.className;
  • Cash (tag#id)

     
    var el = $("div#foo");
    var className = el.className;
  • Cash (tag.id)

     
    var el = $("div.foo2");
    var className = el.className;
  • Cash + getElementById

     
    var el = $(document.getElementById("foo"));
    var className = el.className;
  • Cash + getElementsByClassName

     
    var el = $(document.getElementsByClassName("foo2"));
    var className = el.className;
  • jQuery (#id)

     
    var el = jQuery("#foo");
    var className = el.className;
  • jQuery (.id)

     
    var el = jQuery(".foo2");
    var className = el.className;
  • jQuery (tag#id)

     
    var el = jQuery("div#foo");
    var className = el.className;
  • jQuery (tag.id)

     
    var el = jQuery("div.foo2");
    var className = el.className;
  • jQuery + getElementById

     
    var el = jQuery(document.getElementById("foo"));
    var className = el.className;
  • jQuery + getElementsByClassName

     
    var el = jQuery(document.getElementsByClassName("foo2"));
    var className = el.className;