jQuery .find() vs. context selector

JavaScript performance comparison

Revision 51 of this test case created by Dongsu Jang


comparing selector speed

Preparation code

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>

<p>A test</p>
<p>This is text</p>
Benchmark.prototype.setup = function() {
    var article = document.querySelector('article');

Preparation code output

A test

This is text

Test runner

Warning! For accurate results, please disable Firebug before running the tests. (Why?)

Java applet disabled.

Testing in unknown unknown
Test Ops/sec
find method
var hasFrame = $(article).find('iframe').length > 0 ? true : false;
context method
var hasFrame = $('iframe', article).length > 0 ? true : false;
pure DOM api
var hasFrame = article.getElementsByTagName('iframe').length > 0 ? true: false;

Compare results of other browsers


You can edit these tests or add even more tests to this page by appending /edit to the URL. Here’s a list of current revisions for this page:

1 comment

althjs commented :

fantastic jquery

Comment form temporarily disabled.

Add a comment