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Run results for: 처음 index에 요소 추가

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Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.121 Safari/537.36
Chrome 85
Windows
Desktop
4 years ago
Test name Executions per second
Array.prototype.unshift 23175.0 Ops/sec
spread operator 117.2 Ops/sec
Array.prototype.concat 534.5 Ops/sec
Array.prototype.splice 1381.9 Ops/sec
Script Preparation code:
AخA
 
var arr = [1,2,3]
Tests:

  • Array.prototype.unshift

     
    var a = arr.unshift(99)

  • spread operator

     
    var a = [99, ...arr]

  • Array.prototype.concat

     
    var a = arr.concat([99])

  • Array.prototype.splice

     
    var a = arr.splice(0, 0, 99)