Run results for: Uint8Array vs Uint8ClampedArray 4 value copy

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Browser: Chrome 127

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Uint8ClampedArray

6K/s

Uint8Array

6K/s

View exact numbers

Test name	Executions per second
✓ Uint8ClampedArray	6,060 Ops/sec
Uint8Array	6,030 Ops/sec

Script Preparation code:

var arr1 = new Uint8Array(2500);
var arr2 = new Uint8ClampedArray(2500);

Tests:

Uint8Array
for(let i = 0; i < 2500; i += 4) { let next = (i + 4) % 2500; arr1[i] = arr1[next]; arr1[i+1] = arr1[next+1]; arr1[i+2] = arr1[next+2]; arr1[i+3] = arr1[next+3]; } arr1[37] = arr1[732]
Uint8ClampedArray
for(let i = 0; i < 2500; i += 4) { let next = (i + 4) % 2500; arr2[i] = arr2[next]; arr2[i+1] = arr2[next+1]; arr2[i+2] = arr2[next+2]; arr2[i+3] = arr2[next+3]; } arr2[37] = arr2[732]