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Run results for:
Array concat vs spread operator vs push vs object assign
Compare the new ES6 spread operator with the traditional concat() method and push
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<iframe src="https://measurethat.net/Embed?id=619694" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/141.0.0.0 Safari/537.36
Browser:
Chrome 141
Operating system:
Windows
Device Platform:
Desktop
Date tested:
11 months ago
Benchmark engine:
Benchmark.js
Push
63.0M/s
Array.prototype.concat
13.5M/s
spread operator
10.0M/s
Object assign
2.8M/s
View exact numbers
Test name
Executions per second
✓
Push
62,951,156 Ops/sec
Array.prototype.concat
13,500,375 Ops/sec
spread operator
9,970,338 Ops/sec
Object assign
2,769,591 Ops/sec
Tests:
Array.prototype.concat
var params = [ "hello", true, 7 ]; var other = [ 1, 2 ].concat(params);
spread operator
var params = [ "hello", true, 7 ] var other = [ 1, 2, ...params ]
Push
var params = [ "hello", true, 7 ]; var other = [ 1, 2 ].push(...params);
Object assign
var params = [ "hello", true, 7 ]; var other = Object.assign([], params);