Equality operators

JavaScript performance comparison

Revision 11 of this test case created by Matthew Robb

Info

Test for == and === with the same/diff operand types.

Preparation code

<script>
  var nul = null,
      foo = 12,
      bar = 12,
      baz = "12";
</script>

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Testing in unknown unknown
Test Ops/sec
Non-strict equal
foo == bar;
pending…
Strict equal
foo === bar;
pending…
different types, coercion
foo == baz;
pending…
different types, no coercion
foo === baz;
pending…
Number == null
foo == nul
pending…
Number === null
foo === null
pending…
String == null
baz == null
pending…
String === null
baz === null
pending…
Number === Number()
bar === Number(baz)
pending…
Number == Number()
bar == Number(baz)
pending…

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