+new Date vs Date.now() vs performance.now()

JavaScript performance comparison

Revision 20 of this test case created by Igor Minar

Info

https://twitter.com/jaffathecake/status/306706682552143872

jaffathecake: Avoid "+new Date" to generate timestamps during animation. Use "Date.now()" or "performance.now()" instead http://t.co/Hle0qzxWeZ

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var perf = performance;
    var i;
    var pNow = performance.now;
    var dNow = Date.now;
   
};
</script>

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Testing in unknown unknown
Test Ops/sec
Date.now
Date.now();
pending…
+new Date()
+new Date();
pending…
performance.now()
performance.now()
pending…
new Date().getTime()
new Date().getTime()
pending…
new Date().valueOf()
new Date().valueOf()
pending…
Cached performance object
perf.now()
pending…
counter
i = i + 1;
pending…
pNow()
pNow()
pending…
dNow()
dNow()
pending…

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Revisions

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