The HTMLCanvasElement.width
property is a positive integer
reflecting the width
HTML attribute of the <canvas>
element interpreted in CSS pixels. When the attribute is not specified, or if it is set to an invalid value, like a negative, the default value of 300
is used.
This is one of the two properties, the other being HTMLCanvasElement.height
, that controls the size of the canvas.
Syntax
var pxl = canvas.width; canvas.width = pxl;
Examples
Given this <canvas>
element:
<canvas id="canvas" width="300" height="300"></canvas>
You can get the width of the canvas with the following code:
var canvas = document.getElementById('canvas');
console.log(canvas.width); // 300
Specifications
Specification | Status | Comment |
HTML Living StandardThe definition of 'HTMLCanvasElement.width' in that specification. | Living Standard | No change since the latest snapshot, HTML5 |
HTML 5.1The definition of 'HTMLCanvasElement.width' in that specification. | Recommendation | |
HTML5The definition of 'HTMLCanvasElement.width' in that specification. | Recommendation | Snapshot of the HTML Living Standard containing the initial definition. |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Update compatibility data on GitHub
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
width
|
Chrome
Full support 1 |
Edge
Full support 12 |
Firefox
Full support 1.5 |
IE
Full support 9 |
Opera
Full support 9 |
Safari
Full support 3 |
WebView Android
Full support 1 |
Chrome Android
Full support 18 |
Firefox Android
Full support 4 |
Opera Android
Full support 10.1 |
Safari iOS
Full support 1 |
Samsung Internet Android
Full support 1.0 |
Legend
- Full support
- Full support
See also
- The interface defining it,
HTMLCanvasElement
. - The other property controlling the size of the canvas,
HTMLCanvasElement.height
.
HTMLCanvasElement.width by Mozilla Contributors is licensed under CC-BY-SA 2.5.