getElementsByTagName vs querySelector vs Sizzle

JavaScript performance comparison

Test case created by Morgan Estes

Preparation code

<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<div>foo</div>
<p>foo</p>
<main>foo</main>
<footer>foo(ter)</footer>
    

Preparation code output

<div>foo</div> <p>foo</p> <main>foo</main> <footer>foo(ter)</footer>

Test runner

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

Java applet disabled.

Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
getElementsByTagName
document.getElementsByTagName( 'footer' )[0]
pending…
querySelector
document.querySelector( 'footer' )
pending…
jQuery
jQuery('footer')
pending…

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0 Comments

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