various js libraries+native selector shootout

JavaScript performance comparison

Test case created

Info

Hide 10 nodes.

Preparation code

<script src="//cdn.jqmobi.com/1.2/jq.mobi.min.js"></script>
<script src="//yui.yahooapis.com/3.8.1/build/yui/yui-min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/zepto/1.0rc1/zepto.min.js"></script>

<div id="sidebar">
 <span class="foo">Foo</span>
 <span class="foo">Foo</span>
 <span class="foo">Foo</span>
 <span class="foo">Foo</span>
 <span class="foo">Foo</span>
 <span class="foo">Foo</span>
 <span class="foo">Foo</span>
 <span class="foo">Foo</span>
 <span class="foo">Foo</span>
 <span class="foo">Foo</span>
</div>
<div id="list">
 <span class="bar">Bar</span>
 <span class="bar">Bar</span>
 <span class="bar">Bar</span>
 <span class="bar">Bar</span>
 <span class="bar">Bar</span>
 <span class="bar">Bar</span>
 <span class="bar">Bar</span>
 <span class="bar">Bar</span>
 <span class="bar">Bar</span>
 <span class="bar">Bar</span>
</div>
<div id="details">
 <span class="baz">Baz</span>
 <span class="baz">Baz</span>
 <span class="baz">Baz</span>
 <span class="baz">Baz</span>
 <span class="baz">Baz</span>
 <span class="baz">Baz</span>
 <span class="baz">Baz</span>
 <span class="baz">Baz</span>
 <span class="baz">Baz</span>
 <span class="baz">Baz</span>
</div>
 
<script>
  Benchmark.prototype.setup = function() {
    yQuery = YUI().use('node');
    qQuery = jq;
    zQuery = Zepto;
  };
</script>

Preparation code output

Bar Bar Bar Bar Bar Bar Bar Bar Bar Bar
Baz Baz Baz Baz Baz Baz Baz Baz Baz Baz

Test runner

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Testing in unknown unknown
Test Ops/sec
querySelectorAll("#details > span"), length countdown
 
var nodes = document.querySelectorAll("#details > span");
for (var i = nodes.length; i--;) {
  nodes[i].style.display = "none";
}
 pending…
querySelectorAll("#details > span"), cache length
 
var nodes = document.querySelectorAll("#details > span");
for (var i = 0, len = nodes.length; i < len; i++) {
  nodes[i].style.display = "none";
}
 pending…
querySelectorAll("#details > span")
 
var nodes = document.querySelectorAll("#details > span");
for (var i = 0; i < nodes.length; i++) {
  nodes[i].style.display = "none";
}
 pending…
querySelectorAll(".baz"), length countdown
 
var nodes = document.querySelectorAll(".baz");
for (var i = nodes.length; i--;) {
  nodes[i].style.display = "none";
}
 pending…
querySelectorAll(".baz"), cache length
 
var nodes = document.querySelectorAll(".baz");
for (var i = 0, len = nodes.length; i < len; i++) {
  nodes[i].style.display = "none";
}
 pending…
querySelectorAll(".baz")
 
var nodes = document.querySelectorAll(".baz");
for (var i = 0; i < nodes.length; i++) {
  nodes[i].style.display = "none";
}
 pending…
document.getElementById("details").getElementsByTagName("span"), length countdown
 
var nodes = document.getElementById("details").getElementsByTagName("span");
for (var i = nodes.length; i--;) {
  nodes[i].style.display = "none";
}
 pending…
document.getElementById("details").getElementsByTagName("span"), cache length
 
var nodes = document.getElementById("details").getElementsByTagName("span");
for (var i = 0, len = nodes.length; i < len; i++) {
  nodes[i].style.display = "none";
}
 pending…
document.getElementById("details").getElementsByTagName("span")
 
var nodes = document.getElementById("details").getElementsByTagName("span");
for (var i = 0; i < nodes.length; i++) {
  nodes[i].style.display = "none";
}
 pending…
document.getElementsByClassName("baz"), length countdown
 
var nodes = document.getElementsByClassName("baz");
for (var i = nodes.length; i--;) {
  nodes[i].style.display = "none";
}
 pending…
document.getElementsByClassName("baz"), cache length
 
var nodes = document.getElementsByClassName("baz");
for (var i = 0, len = nodes.length; i < len; i++) {
  nodes[i].style.display = "none";
}
 pending…
document.getElementsByClassName("baz")
 
var nodes = document.getElementsByClassName("baz");
for (var i = 0; i < nodes.length; i++) {
  nodes[i].style.display = "none";
}
 pending…
zepto("#details > span")
 
zQuery("#details > span").hide();
 pending…
zepto(".baz")
 
zQuery(".baz").hide();
 pending…
jquery("#details > span")
 
jQuery("#details > span").hide();
 pending…
jquery(".baz")
 
jQuery(".baz").hide();
 pending…
YUI("#details > span")
 
yQuery.all("#details > span").hide();
 pending…
YUI(".baz")
 
yQuery.all(".baz").hide();
 pending…
jq.mobi("#details > span")
 
qQuery("#details > span").hide();
 pending…
jq.mobi(".baz")
 
qQuery(".baz").hide();
 pending…

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