Run results for: removeChild (first/last) vs removeElementChild (first/last) !!!

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:128.0) Gecko/20100101 Goanna/6.7 Firefox/128.0 PaleMoon/33.8.1.1

Browser: Pale Moon (Firefox Variant) 33

Operating system: Linux

Device Platform: Desktop

Date tested: 10 months ago

removeChild ( firstElementChild )

1.2M/s

removeChild ( lastElementChild )

1.2M/s

removeChild ( lastChild )

1.2M/s

removeChild ( firstChild )

1.2M/s

View exact numbers

Test name	Executions per second
✓ removeChild ( firstElementChild )	1,221,936 Ops/sec
removeChild ( lastElementChild )	1,212,542 Ops/sec
removeChild ( lastChild )	1,210,546 Ops/sec
removeChild ( firstChild )	1,205,736 Ops/sec

HTML Preparation code:

<div id="container"></div>

Script Preparation code:

var node = document.getElementById('container');

for(var i = 0; i < 1000; i++) node.appendChild(document.createElement('div'));

Tests:

removeChild ( firstChild )
var node = document.getElementById('container'); let item; while(item = node.firstChild) node.removeChild(item)
removeChild ( lastChild )
var node = document.getElementById('container'); while(node.firstChild) node.removeChild(node.lastChild)
removeChild ( firstElementChild )
var node = document.getElementById('container'); let item; while(item = node.firstElementChild) node.removeChild(item)
removeChild ( lastElementChild )
var node = document.getElementById('container'); while(node.firstElementChild) node.removeChild(node.lastElementChild)