Run details:
Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3959.0 Safari/537.36
Chrome 80
Windows 7
Desktop
5 years ago
Test name Executions per second
Compound let 112.7 Ops/sec
Let 116.6 Ops/sec
Compound var 115.4 Ops/sec
Tests:
  • Compound let

    AخA
     
    for (let a = 0; a < 10000000; a++) {
      a += 1;
    }
  • Let

     
    for (let a = 0; a < 10000000; a++) {
      a = a + 1;
    }
  • Compound var

     
    for (var a = 0; a < 10000000; a++) {
      a += 1;
    }