Equality operators
JavaScript performance comparison
Info
Test for == and === with the same/diff operand types.
Preparation code
<script>
var nul = null,
foo = 12,
bar = 12,
baz = "12";
</script>
Test runner
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| Test | Ops/sec | |
|---|---|---|
Non-strict equal |
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Strict equal |
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different types, coercion |
|
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different types, no coercion |
|
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Number == null |
|
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Number === null |
|
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String == null |
|
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String === null |
|
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Number === Number() |
|
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Number == Number() |
|
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Revisions
You can edit these tests or add even more tests to this page by appending /edit to the URL. Here’s a list of current revisions for this page:
- Revision 1: published by Dmitry A. Soshnikov
- Revision 4: published by Kyle Simpson
- Revision 6: published
- Revision 9: published
- Revision 10: published by Tobias Reiss
- Revision 11: published by Matthew Robb
- Revision 12: published
- Revision 13: published by Terry Anastasiadis
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