Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36
Chrome 68
Windows
Desktop
6 years ago
Test name Executions per second
.unshift() 16642.7 Ops/sec
.push() 6036818.5 Ops/sec
.push() preallocated array 5977727.0 Ops/sec
.unshift() preallocated array 32.1 Ops/sec
Script Preparation code:
Tests:
  • .unshift()

  • .push()

  • .push() preallocated array

  • .unshift() preallocated array