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Run results for:
Array concat vs spread operator vs push (cycle)
Compare the new ES6 spread operator with the traditional concat() method and push
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<iframe src="https://measurethat.net/Embed?id=533984" 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/126.0.0.0 Safari/537.36
Browser:
Chrome 126
Operating system:
Windows
Device Platform:
Desktop
Date tested:
2 years ago
Array.prototype.concat
645/s
Push
375/s
Push (cycle)
345/s
spread operator
343/s
View exact numbers
Test name
Executions per second
✓
Array.prototype.concat
645 Ops/sec
Push
375 Ops/sec
Push (cycle)
345 Ops/sec
spread operator
343 Ops/sec
Tests:
Array.prototype.concat
const params = new Array(100000).fill(0).map((el,i)=>[ "hello", true, 7 ][i%3]); const other = [ 1, 2 ].concat(params);
spread operator
const params = new Array(100000).fill(0).map((el,i)=>[ "hello", true, 7 ][i%3]); const other = [ 1, 2, ...params ]
Push
const params = new Array(100000).fill(0).map((el,i)=>[ "hello", true, 7 ][i%3]); const other = [ 1, 2 ].push(...params);
Push (cycle)
const params = new Array(100000).fill(0).map((el,i)=>[ "hello", true, 7 ][i%3]); const other = [ 1, 2 ] for (const el of params) other.push(el)