Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.102 Safari/537.36
Chrome 98
Mac OS X 10.15.7
Desktop
3 years ago
Test name Executions per second
no typeof 4075052.0 Ops/sec
typeof 4090659.8 Ops/sec
Script Preparation code:
AخA
 
var a=undefined
Tests:
  • no typeof

     
    var a=undefined
    if (a===undefined) true
  • typeof

     
    var a=undefined
    if(typeof a===undefined) true