Run details:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.96 Safari/537.36
Chrome 88
Linux
Desktop
3 years ago
Test name Executions per second
[123].concat(a) 28545.7 Ops/sec
console.log(a.length) 17526.7 Ops/sec
unshift 6334.2 Ops/sec
console.log(a.length) - 2 16612.5 Ops/sec
Script Preparation code:
Tests:
  • [123].concat(a)

  • console.log(a.length)

  • unshift

  • console.log(a.length) - 2