Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:107.0) Gecko/20100101 Firefox/107.0
Firefox 107
Windows
Desktop
2 years ago
Test name Executions per second
Array.prototype.slice() 22088500.0 Ops/sec
spread operator 3264545.5 Ops/sec
Array.prototype.slice(0) 22137490.0 Ops/sec
Script Preparation code:
x
 
var baseArray = []
for (var i = 0; i < 50; i++) {
  baseArray.push((Math.floor(Math.random() * Math.floor(1000000))).toString(16)) 
}
Tests:
  • Array.prototype.slice()

     
    var other = baseArray.slice();
  • spread operator

     
    var other = [...baseArray];
  • Array.prototype.slice(0)

     
    var other = baseArray.slice(0);