MeasureThat.net

Run results for: 2 direct styles vs. setAttribute vs. classList

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Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/117.0
Firefox 117
Windows
Desktop
one year ago
Test name Executions per second
direct styles 3030.6 Ops/sec
setAttribute 14494.9 Ops/sec
classList 7917.4 Ops/sec
HTML Preparation code:
AخA
 
1
<div id="foo"></div>
Tests:

  • direct styles

     
    var element = document.getElementById("foo");
    var i = 1000;
    while (i--) {
        element.style.postiion = "fixed";
        element.style.bottom = "0";
    }

  • setAttribute

     
    var element = document.getElementById("foo");
    var i = 1000;
    while (i--) {
        element.setAttribute("class", "bar");
    }

  • classList

     
    var element = document.getElementById("foo");
    var i = 1000;
    while (i--) {
        element.classList.add("bar");
    }