Run results for: fisrtchild/lastchild/innercontent performance

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.3 Safari/605.1.15

Browser: Safari 16

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

HTML Preparation code:

<div id='messages'></div>

Script Preparation code:

let list = document.getElementById("messages");
for(i=0; i<1000; i++) {
	list.innerHTML += "<span>Text</span>"
}

Tests:

firstChild/firstChild
let list = document.getElementById("messages"); while (list.firstChild) { list.removeChild(list.firstChild); }
lastChild/lastChild
let list = document.getElementById("messages"); while (list.lastChild) { list.removeChild(list.lastChild); }
firstChild/lastChild
let list = document.getElementById("messages"); while (list.firstChild) { list.removeChild(list.lastChild); }
lastChild/firstChild
let list = document.getElementById("messages"); while (list.lastChild) { list.removeChild(list.firstChild); }
innerHTML
document.getElementById("messages").innerHTML = "";
textContent
document.getElementById("messages").textContent = "";