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

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 16_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/108.0.5359.112 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 108

Operating system: iOS 16.0

Device Platform: Mobile

Date tested: 2 years ago

Test name	Executions per second
typed array	16935.5 Ops/sec
not typed array	16141.2 Ops/sec

Script Preparation code:

var size = 1024;

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

​x
 
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;
}

 
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); }
const arr = [];
for(let i = 0; i < size; i++) {
arr.push(initialArray[i]/2);
}

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

typed array

not typed array