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Run results for:
Array.prototype.slice vs spread operator 2D
Compare the new ES6 spread operator with the traditional slice() method
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<iframe src="https://measurethat.net/Embed?id=556882" 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/128.0.0.0 Safari/537.36
Browser:
Chrome 128
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
Array.prototype.slice
14503165.0 Ops/sec
spread operator
11133719.0 Ops/sec
Tests:
Array.prototype.slice
var params = [ [1, 2], [3, 4], [5, 6], [7, 8], [9, 10] ]; var ans = []; for (let i = 0; i < params.length; i++) { ans.push(params[i].slice()); }
spread operator
var params = [ [1, 2], [3, 4], [5, 6], [7, 8], [9, 10] ]; var ans = []; for (let i = 0; i < params.length; i++) { ans.push([...params[i]]); }