getElementById vs. querySelector (v224)

Revision 224 of this benchmark created on

Preparation HTML

<p class="foo">Foo</p>
<p class="bar">Bar</p>

Setup

var idSelectorRegexp = /^#[a-zA-Z]+[a-zA-Z0-9_\-]*$/;
  
  var select = function(query){
    // pure ID selector?
    if (idSelectorRegexp.test(query))
      return document.getElementsByClassName(query.slice(1));
    else
      return document.querySelectorAll(query);
  };

Test runner

Ready to run.

Testing in
TestOps/sec
getElementsByClassName
var bar = document.getElementsByClassName("bar");
ready
querySelectorAll
var bar = document.querySelectorAll(".bar");
ready
getElementsByTagName
var bar = document.getElementsByTagName("p");
ready

Revisions

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