Run results for: Measure Single Text

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.128 Safari/537.36 OPR/75.0.3969.282 (Edition Yx GX)

Browser: Opera 75

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
offsetWidth	417217.0 Ops/sec
getBoundingClientRect	321620.8 Ops/sec
canvas	334306.2 Ops/sec

HTML Preparation code:

<div>Hello World</div>

Script Preparation code:

const canvas = document.createElement('canvas')
window.context = canvas.getContext('2d')

Tests:

offsetWidth
document.querySelector('div').offsetWidth
getBoundingClientRect
document.querySelector('div').getBoundingClientRect().width
canvas
window.context.measureText('Hello world')

Run results for: Measure Single Text

Using various methods to measure a single string of text.

offsetWidth

getBoundingClientRect

canvas