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Run results for:
for...in vs for...of vs for-loop
Testing the difference between native loops and find()
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<iframe src="https://measurethat.net/Embed?id=519929" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
Browser:
Chrome 124
Operating system:
Linux
Device Platform:
Desktop
Date tested:
2 years ago
for..of
111.0M/s
for-loop
103.2M/s
for..in
10.5M/s
View exact numbers
Test name
Executions per second
✓
for..of
110,971,312 Ops/sec
for-loop
103,248,296 Ops/sec
for..in
10,518,757 Ops/sec
HTML Preparation code:
<div id='test'></div>
Tests:
for-loop
var arr = ['hello', 'a', 'b']; let val; for(i=0; i<arr.length; i++){ var value = arr[i]; if (value === 'b') { val = value; break; } }
for..of
var arr = ['hello', 'a', 'b']; let val; for (var value of arr) { if (value === 'b') { val = value; break; } }
for..in
var arr = ['hello', 'a', 'b']; let val; for (var value in arr) { if (value === 2) { val = value; break; } }