jQuery .find() vs. context selector

JavaScript performance comparison

Revision 37 of this test case created by

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>

      
<script>
Benchmark.prototype.setup = function() {
  var article = document.querySelector('article');
  var $article = $(article);

};
</script>

Preparation code output

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

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
find method
var hasFrame = $article.find('iframe').length > 0;

pending…
context method
var hasFrame = $('iframe', article).length > 0;
pending…
single selector
var hasFrame = $('iframe').length > 0;
pending…
jquery context
var hasFrame = $('iframe', $article).length > 0;
pending…

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A test

This is text