getElementById vs. querySelector (v139)

Revision 139 of this benchmark created on

Preparation HTML

<p id="foo">Foo</p>
<p id="bar">Bar</p>
<p id="baz">Baz</p>

Setup

var select = function(query) {
    // pure ID selector?
    var arr = query.split(' ');
    if (arr.length === 1) {
      if (arr[0].charAt(0) === '#') {
        return document.getElementById(arr[0].substring(1));
      } else {
        return document.querySelector(query);
      }
    } else {
      return document.querySelectorAll(query);
    }
  
  };

Test runner

Ready to run.

Testing in
TestOps/sec
getElementById
var bar = document.getElementById("bar");
ready
querySelector
var bar = document.querySelector("#bar");
ready
mapping to getElementById
var bar = select("#bar");
ready

Revisions

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