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Run results for:
For loop vs Index Of (1000000 case)
save length of the array in the variable vs get it the loop
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<iframe src="https://measurethat.net/Embed?id=490779" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36
Browser:
Chrome 120
Operating system:
Windows
Device Platform:
Desktop
Date tested:
2 years ago
Test name
Executions per second
for loop
638.7 Ops/sec
indexOf
6.8 Ops/sec
Script Preparation code:
var arr = []; var count = 1000000; for(var i = 0; i<count; i++) { arr.push(i); }
Tests:
for loop
function indexOfFor(obj, list) { var i; for (i = 0; i < list.length; i++) { if (list[i] === obj) { return i; } } return -1; }; indexOfFor(900000, arr);
indexOf
arr.indexOf(900000, arr);