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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=623381" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:146.0) Gecko/20100101 Firefox/146.0
Browser:
Firefox 146
Operating system:
Mac OS X 10.15
Device Platform:
Desktop
Date tested:
8 months ago
Benchmark engine:
Benchmark.js
Push
56.3M/s
Array.prototype.concat
46.8M/s
spread operator
45.0M/s
Object assign
9.8M/s
View exact numbers
Test name
Executions per second
✓
Push
56,274,620 Ops/sec
Array.prototype.concat
46,832,596 Ops/sec
spread operator
45,011,300 Ops/sec
Object assign
9,766,580 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);