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Run results for:
copy typed array with Array.from() vs new Array()
Testing the difference between creating filled arrays.
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<iframe src="https://measurethat.net/Embed?id=629718" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/149.0.0.0 Safari/537.36
Browser:
Chrome 149
Operating system:
Linux
Device Platform:
Desktop
Date tested:
one month ago
new Array()
254K/s
Array.from()
38K/s
View exact numbers
Test name
Executions per second
✓
new Array()
254,443 Ops/sec
Array.from()
37,652 Ops/sec
Tests:
new Array()
const ary = new Uint32Array(1000); const res = new Array(1000); for (let i = 0; i < ary.length; ++i) { res[i] = ary[i]; }
Array.from()
const ary = new Uint32Array(1000); const res = Array.from(ary);