Id vs Class Selectors
JavaScript performance comparison
Preparation code
<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<div id="id" class="class">
<div id="subid" class="subclass"></div>
</div>
Preparation code output
Test runner
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Java applet disabled.
| Test | Ops/sec | |
|---|---|---|
ID (Native) |
|
pending… |
Class (Native) |
|
pending… |
ID (jQuery) |
|
pending… |
Class (jQuery) |
|
pending… |
ID+Class (jQuery) |
|
pending… |
ID ID (jQuery) |
|
pending… |
ID > ID (jQuery) |
|
pending… |
ID Class (jQuery) |
|
pending… |
ID > Class (jQuery) |
|
pending… |
Class Class (jQuery) |
|
pending… |
Class > Class (jQuery) |
|
pending… |
Class ID (jQuery) |
|
pending… |
Class > ID (jQuery) |
|
pending… |
Compare results of other browsers
Revisions
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:
- Revision 1: published by olegbl
- Revision 2: published
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