getElementsByTagname vs querySelectorAll vs jQuery (v19)

Revision 19 of this benchmark created on

Description

Tests how quickly you can iterate through multiple elements on the page.

Preparation HTML

<script src="//code.jquery.com/jquery-git2.min.js"></script>

<input type="PASSWORD"></input><input type="PASSWORD"></input>

Setup

var hasFields = false;

Teardown


    hasFields = false;

Test runner

Ready to run.

Testing in
TestOps/sec
Using querySelectorAll()
var fields = document.querySelectorAll('input[type=password]');
if (fields.length > 0) {
  hasFields = true;
}
ready
Using querySelector()
var fields = document.querySelector('input[type=password]');
if (fields !== null) {
  hasFields = true;
}
ready
jQuery
var fields = jQuery('input[type=password]');
if (fields.length > 0) {
  hasFields = true;
}
ready
ByTagName while
var fields = document.getElementsByTagName('input'), i = -1;
while (++i < fields.length) {
  if (fields[i].type === 'password') {
    hasFields = true;
  }
}
ready
ByTagName for
var fields = document.getElementsByTagName('input');
for (var i = 0; i < fields.length; i++) {
  if (fields[i].type === 'password') {
    hasFields = true;
  }
}
ready
ByTagName for regex
var fields = document.getElementsByTagName('input');
for (var i = 0; i < fields.length; i++) {
  if ((/password/i).test(fields[i].type)) {
    hasFields = true;
  }
}
ready

Revisions

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