Run results for: for..in vs for..of vs classic for

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.166 Safari/537.36 OPR/79.0.4143.66

Browser: Opera 79

Operating system: Linux

Device Platform: Desktop

Date tested: 2 years ago

HTML Preparation code:

<div id='test'></div>

Tests:

classic for
const arr = Array.from(Array(1000000).keys()); const odds = [] for(i=0; i<arr.length; i++){ const value = arr[i]; odds[i] = (value%2 === 0) ? 'odd' : 'even'; }
for..of
const arr = Array.from(Array(1000000).keys()); const odds = [] for (const value of arr) { odds[value] = (value%2 === 0) ? 'odd' : 'even'; }
for..in
const arr = Array.from(Array(1000000).keys()); const odds = [] for (const value in arr) { odds[value] = (value%2 === 0) ? 'odd' : 'even'; }