jQuery .find() vs. context selector vs selector

JavaScript performance comparison

Revision 11 of this test case created by Mike Chu

Preparation code

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js">
</script>
<article>
  <p>
    A test
  </p>
  <p>
    <iframe>
    </iframe>
  </p>
  <p>
    This is text
  </p>
</article>
    

Preparation code output

<article> <p> A test </p> <p> <iframe> </iframe> </p> <p> This is text </p> </article>

Test runner

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
find method
// async test
var hasFrame = $("article").find("iframe").length > 0 ? true : false;
pending…
context method
var hasFrame = $("iframe", "article").length > 0 ? true : false;
pending…
selector only
var hasFrame = $("article > iframe").length > 0 ? true : false;
pending…

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A test

This is text