Run results for: for of vs for loops

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:136.0) Gecko/20100101 Firefox/136.0

Browser: Firefox 136

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

for-index

899/s

for-of

144/s

View exact numbers

Test name	Executions per second
✓ for-index	899 Ops/sec
for-of	144 Ops/sec

Script Preparation code:

const planes = new Array(1_000_000).fill(2);

Tests:

for-of
for (const plane of planes) { Math.sqrt(plane); }
for-index
for (let i = 0; i < planes.length; i++) { const plane = planes[i]; Math.sqrt(plane); }