Run results for: style vs. style.cssText

Run details:

User agent: Mozilla/5.0 (Linux; Android 9; Redmi Note 5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.157 Mobile Safari/537.36

Browser: Chrome Mobile 74

Operating system: Android

Device Platform: Mobile

Date tested: 5 years ago

Test name	Executions per second
style	2040.9 Ops/sec
style.cssText	1513.5 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();