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Run results for:
20240812-for
Compare loop performance
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Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36
Browser:
Chrome 127
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
for
4.4 Ops/sec
.forEach
5.7 Ops/sec
for...in
2.7 Ops/sec
for...of
5.6 Ops/sec
While
4.4 Ops/sec
Script Preparation code:
var iterations = 1000000;//, 10000000 var myArray = Array.from(Array(iterations).keys()); var total = 0;
Tests:
for
var len = myArray.length; for (let i = 0; i < len; i++) { total += myArray[i]; }
.forEach
myArray.forEach((item) => { total += item })
for...in
for (var i in myArray) { total += myArray[i]; }
for...of
for (var item of myArray) { total += item }
While
var i = myArray.length; while (i--) { total += myArray[i]; }