reuse of jquery selector on the same line

JavaScript performance comparison

Test case created

Preparation code

<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js">
</script>
<div id="a">
  Hello
</div>
<script>
Benchmark.prototype.teardown = function() {
    $("#a").html("Hello")
};
</script>

Preparation code output

Hello

Test runner

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Testing in unknown unknown
Test Ops/sec
without using a variable
$("#a").html("goodnight" + $("#a").val());
pending…
with a variable
var a = $("#a");
a.html("goodnight" + a.val());
pending…

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