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?

Go to the benchmark
Run details:
Mozilla/5.0 (X11; Linux x86_64; rv:120.0) Gecko/20100101 Firefox/120.0
Firefox 120
Linux
Desktop
one year ago
Test name Executions per second
Number.isInteger() positive 482939712.0 Ops/sec
typeof positive 458923072.0 Ops/sec
Number.isInteger() negative 457598400.0 Ops/sec
typeof negative 464542240.0 Ops/sec
Tests:

  • Number.isInteger() positive

  • typeof positive

  • Number.isInteger() negative

  • typeof negative