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

JavaScript performance comparison

Revision 16 of this test case created by

Preparation code 

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<p><ins></ins></p>

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

<p><ins></ins></p>

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

<p><ins></ins></p>

<article>
	<p>A test</p>
	<p><ins></ins></p>
	<p>This is text</p>
	<article>
		<p>A test</p>
		<p><ins></ins></p>
		<p>This is text</p>
		<article>
			<p>A test</p>
			<p><ins></ins></p>
			<p>This is text</p>
			<article>
				<p>A test</p>
				<p><ins></ins></p>
				<p>This is text</p>
				<article>
					<p>A test</p>
					<p><ins></ins></p>
					<p>This is text</p>
					<article>
						<p>A test</p>
						<p><ins></ins></p>
						<p>This is text</p>
							<article>
								<p>A test</p>
								<p><ins></ins></p>
								<p>This is text</p>
							</article>
					</article>
				</article>
			</article>
		</article>
	</article>
</article>
		
<article>
	<p>A test</p>
	<div>
		<div>
			<div>
				<p><ins></ins></p>
			</div>
		</div>
	</div>
	<p>This is text</p>
</article>
      

      <script>

        Benchmark.prototype.setup = function() {

          
  var $article = $('article');
  var article = $article[0];

        
  };


      
</script>

Preparation code output

<p><ins></ins></p> <article> <p>A test</p> <p><ins></ins></p> <p>This is text</p> </article> <p><ins></ins></p> <article> <p>A test</p> <p><ins></ins></p> <p>This is text</p> </article> <p><ins></ins></p> <article> <p>A test</p> <p><ins></ins></p> <p>This is text</p> <article> <p>A test</p> <p><ins></ins></p> <p>This is text</p> <article> <p>A test</p> <p><ins></ins></p> <p>This is text</p> <article> <p>A test</p> <p><ins></ins></p> <p>This is text</p> <article> <p>A test</p> <p><ins></ins></p> <p>This is text</p> <article> <p>A test</p> <p><ins></ins></p> <p>This is text</p> <article> <p>A test</p> <p><ins></ins></p> <p>This is text</p> </article> </article> </article> </article> </article> </article> </article> <article> <p>A test</p> <div> <div> <div> <p><ins></ins></p> </div> </div> </div> <p>This is text</p> </article>

Test runner

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Testing in archive.org_bot 0.0.0 / Other 0.0.0
Test Ops/sec
find method (node context) 
var has = $(article).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).length > 0 ? true : false;
 pending…
context jQuery 
var has = $('ins', $article).length > 0 ? true : false;
 pending…
context jQuery[0] 
var has = $('ins', $article[0]).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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