Run results for: create array of nodes Array from vs slice vs push vs index vs spread

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; SAMSUNG SM-N960N) AppleWebKit/537.36 (KHTML, like Gecko) SamsungBrowser/21.0 Chrome/110.0.5481.154 Mobile Safari/537.36

Browser: Chrome Mobile 110

Operating system: Android

Device Platform: Mobile

Date tested: 11 months ago

Test name	Executions per second
Array.from	1327.1 Ops/sec
Array.slice	1702.9 Ops/sec
Array.push	1979.8 Ops/sec
Array[index]	2217.6 Ops/sec
Array spread	1341.3 Ops/sec

HTML Preparation code:

<ul id="my-test-ul">
</ul>

Script Preparation code:

var ul = document.getElementById('my-test-ul');
for(var i=0;i<1000;i++) {
  ul.appendChild(document.createElement('li'));
}

var nodeList = document.querySelectorAll('ul#my-test-ul > li');

Tests:

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

Run results for: create array of nodes Array from vs slice vs push vs index vs spread

Array.from

Array.slice

Array.push

Array[index]

Array spread