Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:92.0) Gecko/20100101 Firefox/92.0
Firefox 92
Mac OS X 10.15
Desktop
3 years ago
Test name Executions per second
array.unshift(0); 440535.5 Ops/sec
array = [0].concat(array) 67.6 Ops/sec
[0, ...array] 43.9 Ops/sec
Script Preparation code:
Tests:
  • array.unshift(0);

  • array = [0].concat(array)

  • [0, ...array]