Triple vs Double Equals

JavaScript performance comparison

Test case created

Preparation code

<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
 
<script>
Benchmark.prototype.setup = function() {
    var i = 1e8;
    var a = [];
    while (i --> 0) a.push(Math.random());
};
</script>

Preparation code output

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Testing in unknown unknown
Test Ops/sec
Double
var x;
while (x = a.pop()) typeof x == 'number'
pending…
Triple
var x;
while (x = a.pop()) typeof x === 'number'
pending…

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