MeasureThat.net

Run results for: window.getComputedStyle vs. className2

Go to the benchmark
Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:90.0) Gecko/20100101 Firefox/90.0
Firefox 90
Mac OS X 10.15
Desktop
3 years ago
Test name Executions per second
getComputedStyle 191.7 Ops/sec
className 803.6 Ops/sec
HTML Preparation code:
AخA
 
1
<div class="foo"></div>
Tests:

  • getComputedStyle

    ​x
     
    var i = 3000;
    var div = document.getElementsByClassName('foo')[0];
    while (i--) {
        chekele(div);
    }
    ​
    function chekele(element) {
        return window.getComputedStyle(element, null).display.indexOf('none') === -1;
    }

  • className

     
    var i = 3000;
    while (i--) {
        chekele('foo');
    }
    ​
    function chekele(element) {
        return document.getElementsByClassName(element)[0].className.indexOf('hide') === -1;
    }
    ​