MeasureThat.net

Run results for: window.getComputedStyle vs. className vs. classList 2

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Run details:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.0.0 Safari/537.36
Chrome 113
Linux
Desktop
one year ago
Test name Executions per second
getComputedStyle 767.9 Ops/sec
className 4984.7 Ops/sec
classList 4086.4 Ops/sec
getComputedStyle cached 2814.0 Ops/sec
HTML Preparation code:
AخA
 
1
<div id="foo"></div>
Tests:

  • getComputedStyle

     
    var i = 3000;
    while (i--) {
        window.getComputedStyle(document.body).getPropertyValue("display").indexOf('none') !== -1
    }

  • className

    ​x
     
    var i = 3000;
    while (i--) {
        document.body.className.includes('hide');
    }
    ​

  • classList

     
    var i = 3000;
    while (i--) {
         document.body.classList.contains('hide');
    }

  • getComputedStyle cached

     
    var i = 3000;
    const styles = window.getComputedStyle(document.body);
    while (i--) {
        styles.getPropertyValue("display").includes('none');
    }