Run results for: style vs. style.cssText

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:74.0) Gecko/20100101 Firefox/74.0

Browser: Firefox 74

Operating system: Mac OS X 10.14

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
style	23699.4 Ops/sec
style.cssText	23022.7 Ops/sec

HTML Preparation code:

<div id='a'>foo</div>
<div id='b'>bar</div>

Script Preparation code:

var a = document.getElementById('a');
var b = document.getElementById('b');

Tests:

style
a.style.fontSize = `${20 * Math.random()}px`; a.style.letterSpacing = `-${Math.random()}em`; a.style.wordSpacing = '0em'; const x = a.getBoundingClientRect();
style.cssText
b.style.cssText = ` font-size: ${20 * Math.random()}px; letter-spacing: -${Math.random()}em; word-spacing: 0em; `; const x = b.getBoundingClientRect();