domcache

JavaScript performance comparison

Test case created

Preparation code

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

<div class="myclass">Foo</div>
<div class="myclass">Bar</div>
<div class="myclass">Foo</div>
<div class="myclass">Bar</div>
<div class="myclass">Foo</div>
<div class="myclass">Bar</div>
<div class="myclass">Foo</div>
<div class="myclass">Bar</div>
<div class="myclass">Foo</div>
<div class="myclass">Bar</div>
<div class="myclass">Foo</div>
<div class="myclass">Bar</div>
<div class="myclass">Foo</div>
<div class="myclass">Bar</div>
<div class="myclass">Foo</div>
<div class="myclass">Bar</div>
<div class="myclass">Foo</div>
<div class="myclass">Bar</div>
<div class="myclass">Foo</div>
<div class="myclass">Bar</div>
<div class="myclass">Foo</div>
<div class="myclass">Bar</div>
<div class="myclass">Foo</div>
<div class="myclass">Bar</div>
<div class="myclass">Foo</div>
<div class="myclass">Bar</div>
<div class="myclass">Foo</div>
<div class="myclass">Bar</div>
<div class="myclass">Foo</div>
<div class="myclass">Bar</div>

Preparation code output

Foo
Bar
​ ​
Foo
Bar
​ ​
Foo
Bar
​ ​
Foo
Bar
​ ​
Foo
Bar
​ ​
Foo
Bar
​ ​
Foo
Bar
​ ​
Foo
Bar
​ ​
Foo
Bar
​ ​
Foo
Bar
​ ​
Foo
Bar
​ ​
Foo
Bar
​ ​
Foo
Bar
​ ​
Foo
Bar
​ ​
Foo
Bar

Test runner

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Testing in unknown unknown
Test Ops/sec
jQuery double selector
$('.myclass').html('hello');
$('.myclass').html('bye');
pending…
Dom cache
var elems = document.querySelectorAll('.myclass');

$(elems).html('hello');
$(elems).html('bye');
pending…
jQuery cache
var $elems = $('.myclass');

$elems.html('hello');
$elems.html('bye');
pending…

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