Tests:
  • Array.prototype.concat

    AخA
     
    var arr1 = [ 1,2,3,4,5,6,7,8,9,10 ];
    var arr2 = [ 1,2,3,4,5,6,7,8,9,10 ];
    var newArr = arr1.concat(arr2);
  • push with spread operator

     
    var arr1 = [ 1,2,3,4,5,6,7,8,9,10 ];
    var arr2 = [ 1,2,3,4,5,6,7,8,9,10 ];
    var newArr = arr1.push(...arr2);
  • spread operator

     
    var arr1 = [ 1,2,3,4,5,6,7,8,9,10 ];
    var arr2 = [ 1,2,3,4,5,6,7,8,9,10 ];
    var newArr = [...arr1, ...arr2];
Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Experimental features:

  • Test case name Result
    Array.prototype.concat
    push with spread operator
    spread operator

    Fastest: N/A

    Slowest: N/A

Latest run results:
Run details: (Test run date: 5 years ago)
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:71.0) Gecko/20100101 Firefox/71.0
Firefox 71 on Windows
View result in a separate tab
Test name Executions per second
Array.prototype.concat 4893896.5 Ops/sec
push with spread operator 2058024.9 Ops/sec
spread operator 3463128.2 Ops/sec