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 (Windows NT 6.3; Win64; x64; rv:109.0) Gecko/20100101 Firefox/115.0
Firefox 115
Windows 8.1
Desktop
one year ago
Test name Executions per second
Number.isInteger() positive 88399352.0 Ops/sec
typeof positive 95500984.0 Ops/sec
Number.isInteger() negative 93695096.0 Ops/sec
typeof negative 96421976.0 Ops/sec
Tests:

  • Number.isInteger() positive

  • typeof positive

  • Number.isInteger() negative

  • typeof negative