Browser Diet - DOM Manipulation

JavaScript performance comparison

Test case created by Zeno Rocha

Preparation code

<div id="myList"></div>

Preparation code output

Test runner

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Java applet disabled.

Testing in unknown unknown
Test Ops/sec
DOM manipulation every iteration
var myList = document.getElementById("myList");

for (var i = 0; i < 100; i++) {
  myList.innerHTML += "<span>" + i + "</span>";
DOM manipulation after all iterations
var myList = "";

for (var i = 0; i < 100; i++) {
  myList += "<span>" + i + "</span>";

document.getElementById("myList").innerHTML = myList;

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