Run results for: new Array from vs slice vs push vs index vs spread

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 16_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/107.0.5304.101 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 107

Operating system: iOS 16.1

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
Array.from	2097926.0 Ops/sec
Array.slice	2211778.0 Ops/sec
Array.push	3067439.0 Ops/sec
Array[index]	2661648.0 Ops/sec
Array spread	2204262.0 Ops/sec

Tests:

Array.from
const elements = document.all; const arr = Array.from(elements);
Array.slice
const elements = document.all; const arr = Array.prototype.slice.call(elements, 0);
Array.push
const elements = document.all; const amount = elements.length; const arr = []; for (let i = 0; i < amount; i += 1) arr.push(elements[i]);
Array[index]
const elements = document.all; const amount = elements.length; const arr = Array(amount); for (let i = 0; i < amount; i += 1) arr[i] = elements[i];
Array spread
const elements = document.all; const arr = [...elements];

Run results for: new Array from vs slice vs push vs index vs spread

Array.from

Array.slice

Array.push

Array[index]

Array spread