Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.82 Safari/537.36
Chrome 93
Windows
Desktop
3 years ago
Test name Executions per second
while 6.7 Ops/sec
for 6.7 Ops/sec
forEach 356.3 Ops/sec
for of 1966.2 Ops/sec
Script Preparation code:
AخA
 
var arr =new Array(1000000);
Tests:
  • while

     
    let i=0;
    while(i < arr.length) {
      const exp = arr[i] ** 2 ** 2 ** 2 ** 2;
      i++;
    }
  • for

     
    for(let i=0; i<arr.length; i++) {
      const exp = arr[i] ** 2 ** 2 ** 2 ** 2;
    }
  • forEach

     
    arr.forEach((element) => {
      const exp = element ** 2 ** 2 ** 2 ** 2;
    });
  • for of

     
    for(const element of arr) {
      const exp = element ** 2 ** 2 ** 2 ** 2;
    }