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Run results for:
insertAdjacentHTML with outerHTML vs append with CloneNode vs appendChild
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<iframe src="https://measurethat.net/Embed?id=593413" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36
Browser:
Chrome 133
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
append
476.2 Ops/sec
insertAdjacentHTML
447.1 Ops/sec
appendChild
447.4 Ops/sec
HTML Preparation code:
<div id="test"></div>
Tests:
append
var newElement = document.createElement("div"); newElement.id = "testing" for (i = 0; i < 1000; i++) { var newElementPart = document.createElement("div"); newElementPart.classList.add("testClass"); newElement.append(newElementPart); } document.getElementById("test").append(newElement.cloneNode(true));
insertAdjacentHTML
var newElement = document.createElement("div"); newElement.id = "testing" for (i = 0; i < 1000; i++) { var newElementPart = document.createElement("div"); newElementPart.classList.add("testClass"); newElement.append(newElementPart); } document.getElementById("test").insertAdjacentHTML("beforeend", newElement.outerHTML);
appendChild
var newElement = document.createElement("div"); newElement.id = "testing" for (i = 0; i < 1000; i++) { var newElementPart = document.createElement("div"); newElementPart.classList.add("testClass"); newElement.append(newElementPart); } document.getElementById("test").appendChild(newElement.cloneNode(true));