MeasureThat.net

Run results for: Copy Array

Speed of array cloning

Go to the benchmark
Run details:
Mozilla/5.0 (iPhone; CPU iPhone OS 18_3_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) FxiOS/136.2 Mobile/15E148 Safari/605.1.15
Mobile Safari 18
iOS 18.3.2
Mobile
25 days ago
Test name Executions per second
Spread 167.3 Ops/sec
Slice 66.1 Ops/sec
Slice(0) 63.7 Ops/sec
concat 497.0 Ops/sec
Script Preparation code:
AخA
 
var len = 1000*1000;
var arr = new Array(len);
Tests:

  • Spread

     
    var arr2 = [...arr];

  • Slice

     
    var arr2 = arr.slice();

  • Slice(0)

     
    var arr2 = arr.slice(0);

  • concat

     
    var arr2 = arr.concat();