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Run results for: Array.prototype.concat vs spread operator vs lodash concat

Compare the new ES6 spread operator vs Array.prototype.concat vs _.concat

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Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.131 Safari/537.36
Chrome 74
Mac OS X 10.13.6
Desktop
5 years ago
Test name Executions per second
Array.prototype.concat 2793335.0 Ops/sec
spread operator 4545032.5 Ops/sec
lodash concat 1210632.0 Ops/sec
HTML Preparation code:
AخA
 
1
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.10/lodash.min.js"></script>
Script Preparation code:
 
var a = [1, 2, 3]
var b = [4, 5, 6]
Tests:

  • Array.prototype.concat

     
    var c = a.concat(b);

  • spread operator

     
    var c = [...a, ...b]

  • lodash concat

     
    var c = _.concat(a, b);