HTMLCanvasElement.width
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
JavaScript
Copy Code
<var>var pxl = canvas</var>.width; canvas.width = pxl;
Examples
Given this <canvas>
element:
HTML
Copy Code
<canvas id="canvas" width="300" height="300"></canvas>
You can get the width of the canvas with the following code:
JavaScript
Copy Code
var canvas = document.getElementById("canvas"); console.log(canvas.width); // 300
Specifications
Specification | Status | Comment |
---|---|---|
WHATWG HTML Living Standard The definition of 'HTMLCanvasElement.width' in that specification. |
Living Standard | No change since the latest snapshot, HTML5 |
HTML5.1 The definition of 'HTMLCanvasElement.width' in that specification. |
Working Draft | |
HTML5 The definition of 'HTMLCanvasElement.width' in that specification. |
Recommendation | Snapshot of the WHATWG HTML Living Standard containing the initial definition. |
Browser compatibility
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|
Basic support | 4 | 3.6 (1.9.2) | 9 | 9 | 3.1 |
Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|
Basic support | (Yes) | (Yes) | 1.0 (1.9.2) | (Yes) | (Yes) | (Yes) |
See also
- The interface defining it,
HTMLCanvasElement
. - The other property controlling the size of the canvas,
HTMLCanvasElement.height
.
License
© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-us/docs/web/api/htmlcanvaselement/width