Run results for: Create Float32Array via unpacking or concat?

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36

Browser: Chrome 135

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Arrays

88K/s

Float32Arrays

5K/s

Concat

2K/s

View exact numbers

Script Preparation code:

var newArray = () => {
  return [1, 2, 3, 4, 5];
}

var newF32Array = () => {
  return new Float32Array([1, 2, 3, 4, 5]);
}

Tests:

Arrays
let array = []; for (let i=0; i<1000; i++) { array.push(...newArray()); }
Float32Arrays
let array = []; for (let i=0; i<1000; i++) { array.push(...newF32Array()); }
Concat
let array = []; for (let i=0; i<1000; i++) { array = array.concat(newArray()) }