Run results for: Number.isInteger() vs typeof

Is it faster to detect if a variable is an integer or is it faster to use typeof to verify the type?

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Run details:
Mozilla/5.0 (X11; Linux x86_64; rv:136.0) Gecko/20100101 Firefox/136.0
Firefox 136
Linux
Desktop
one year ago
Test name Executions per second
Number.isInteger() positive 1311527296.0 Ops/sec
typeof positive 1531819392.0 Ops/sec
Number.isInteger() negative 1445254912.0 Ops/sec
typeof negative 1497396352.0 Ops/sec
Tests:

  • Number.isInteger() positive

  • typeof positive

  • Number.isInteger() negative

  • typeof negative