Run results for: typeof vs instanceof

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36

Browser: Chrome 137

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

instanceof

497K/s

typeof

493K/s

View exact numbers

Test name	Executions per second
✓ instanceof	496,715 Ops/sec
typeof	493,118 Ops/sec

HTML Preparation code:

<!--your preparation HTML code goes here-->

Script Preparation code:

var valueToCheck = {
  foo: '',
  bar: 42,
  baz: false,
};

Tests: