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Run results for:
javascript concat vs spread operator vs push3
javascript concat vs spread operator vs push
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<iframe src="https://measurethat.net/Embed?id=490001" 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/118.0.0.0 Whale/3.23.214.17 Safari/537.36
Browser:
Chrome 118
Operating system:
Windows
Device Platform:
Desktop
Date tested:
2 years ago
Test name
Executions per second
concat
17305.5 Ops/sec
spread operator
16941.3 Ops/sec
push
17408.7 Ops/sec
Tests:
concat
var existed = Array.from({length:1000},(_,i)=>i) var params = Array.from({length:1000},(_,i)=>i) var other = existed.concat(params);
spread operator
var existed = Array.from({length:1000},(_,i)=>i) var params = Array.from({length:1000},(_,i)=>i) var other = [ ...existed, ...params ];
push
var existed = Array.from({length:1000},(_,i)=>i) var params = Array.from({length:1000},(_,i)=>i) var other = existed.push(...params);