jsPerf.app is an online JavaScript performance benchmark test runner & jsperf.com mirror. It is a complete rewrite in homage to the once excellent jsperf.com now with hopefully a more modern & maintainable codebase.
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https://jsperf.app/negative-modulo/2
This test is motivated by the use of duck typing in the current underscore.js implementation for _.isType() functions.
I believe we should not care about the cross frame edge case - take a look at the performance.
<script>
var obj0 = [1, 2, 3],
obj1 = {
a: 5,
b: 7
},
obj2 = [
[
[]
]
],
obj3 = 8,
toString = Object.prototype.toString;
</script>
Ready to run.
Test | Ops/sec | |
---|---|---|
duck typing |
| ready |
instanceof |
| ready |
secure cross frame |
| ready |
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