MeasureThat.net

Run results for: Copy Array

Speed of array cloning

Go to the benchmark
Run details:
Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.116 Safari/537.36
Chrome 53
Windows
Other
8 years ago
Test name Executions per second
Spread 2.6 Ops/sec
Slice 43.4 Ops/sec
Slice(0) 45.2 Ops/sec
concat 44.7 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();