Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36
Chrome 83
Mac OS X 10.15.5
Desktop
4 years ago
Test name Executions per second
arr.unshift(42) 26330.9 Ops/sec
[42].concat(arr) 1664.0 Ops/sec
Script Preparation code:
Tests:
  • arr.unshift(42)

  • [42].concat(arr)