Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.135 Safari/537.36 OPR/70.0.3728.189
Opera 70
Windows
Desktop
4 years ago
Test name Executions per second
arrayUnshift 18882.8 Ops/sec
arrayConcat 508.4 Ops/sec
arraySpread 159.7 Ops/sec
arrayPush 4400949.0 Ops/sec
Script Preparation code:
AخA
 
var array = [1,2,3];
var array2 = [4,5,6];
Tests:
  • arrayUnshift

     
    array.unshift(...array2);
  • arrayConcat

     
    array = array.concat(array2)
  • arraySpread

     
    array = [...array, ...array2]
  • arrayPush

     
    array.push(...array2);