Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.81 Safari/537.36
Chrome 69
Windows
Desktop
6 years ago
Test name Executions per second
.unshift() 9751.2 Ops/sec
.push() 5480968.5 Ops/sec
.push() preallocated array 4615850.0 Ops/sec
.unshift() preallocated array 41.9 Ops/sec
Script Preparation code:
Tests:
  • .unshift()

  • .push()

  • .push() preallocated array

  • .unshift() preallocated array