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Run results for:
for, for-of, forEach
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Embed Benchmark Result
Run details:
User agent:
Mozilla/5.0 (iPhone; CPU iPhone OS 18_6 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.0 Mobile/15E148 Safari/604.1
Browser:
Mobile Safari 26
Operating system:
iOS 18.6
Device Platform:
Mobile
Date tested:
7 months ago
Test name
Executions per second
for loop
6216.3 Ops/sec
for-of const
4804.3 Ops/sec
for-of var
4820.9 Ops/sec
forEach
6588.5 Ops/sec
Array.prototype.forEach
4900.2 Ops/sec
iterator.forEach
147.6 Ops/sec
Iterator.prototype.forEach
145.1 Ops/sec
Script Preparation code:
var data = new Array(100_000).fill(1).map(() => ({}));
Tests:
for loop
for (var i = 0; i < data.length; ++i) { data[i].value = 7; }
for-of const
for (const o of data) { o.value = 7; }
for-of var
for (var o of data) { o.value = 7; }
forEach
data.forEach(o => { o.value = 7; });
Array.prototype.forEach
Array.prototype.forEach.call(data, o => { o.value = 7; });
iterator.forEach
data[Symbol.iterator]().forEach(o => { o.value = 7; });
Iterator.prototype.forEach
Iterator.prototype.forEach.call(data[Symbol.iterator](), o => { o.value = 7; });