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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 (Windows NT 10.0; Win64; x64; rv:143.0) Gecko/20100101 Firefox/143.0
Browser:
Firefox 143
Operating system:
Windows
Device Platform:
Desktop
Date tested:
7 months ago
Test name
Executions per second
for loop
7245.3 Ops/sec
for-of const
3949.5 Ops/sec
for-of var
4054.5 Ops/sec
forEach
4014.4 Ops/sec
Array.prototype.forEach
3940.6 Ops/sec
iterator.forEach
2426.7 Ops/sec
Iterator.prototype.forEach
2399.1 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; });