jQuery .find() vs. context selector vs non-context selector

JavaScript performance comparison

Revision 42 of this test case created

Info

comparing selector speed

Preparation code

<script src="//ajax.googleapis.com/ajax/libs/jquery/1.6.1/jquery.min.js"></script>

<article>
        <p>A test</p>
        <p><ins></ins></p>
        <p>This is text</p>
</article>
<script>
Benchmark.prototype.setup = function() {
    var $article = $('article');
};
</script>

Preparation code output

A test

This is text

Test runner

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Testing in unknown unknown
Test Ops/sec
find method (node context)
var has = $($article[0]).find('ins').length > 0 ? true : false;
pending…
find method (jquery context)
var has = $article.find('ins').length > 0 ? true : false;
pending…
context node
var has = $('ins', $article[0]).length > 0 ? true : false;
pending…
context jquery
var has = $('ins', $article).length > 0 ? true : false;
pending…
cascade
var has = $('article ins').length > 0 ? true : false;
pending…
context (no cached)
var has = $('ins', 'article').length > 0 ? true : false;
pending…
select and find
var has = $('article').find('ins').length > 0 ? true : false;
pending…
'parent > child' selector
var has = $('article > ins').length > 0 ? true : false;
pending…

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