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Run results for:
array.splice vs for loop
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=604639" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36
Browser:
Chrome 135
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
array.splice
53809.3 Ops/sec
for loop
249935.6 Ops/sec
array.splice w/o spread
235414.3 Ops/sec
Script Preparation code:
s = new Set(); a = []; for (var i=0; i < 1000; i++) s.add(i*i);
Tests:
array.splice
a.splice(0, a.length, ...s.values());
for loop
a.length = 0; for (var x of s) a.push(x);
array.splice w/o spread
a.splice.apply(a, [0, a.length].concat(Array.from(s)));