Run results for: change Float64Array vs array.push (change)

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:109.0) Gecko/20100101 Firefox/115.0

Browser: Firefox 115

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: 2 years ago

typed array

963K/s

not typed array

271K/s

View exact numbers

Test name	Executions per second
✓ typed array	963,378 Ops/sec
not typed array	270,602 Ops/sec

Script Preparation code:

var size = 1024;

var initialArray = [];
for(let i = 0; i < size; i++) {
  initialArray.push(Math.random());
}

Tests:

typed array
const arr = new Float64Array(size); for(let i = 0; i < size; i++) { arr[i] = initialArray[i]/2; }
not typed array
const arr = []; for(let i = 0; i < size; i++) { arr.push(initialArray[i]/2); }