This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The CanvasRenderingContext2D
.direction
property of the Canvas 2D API specifies the current text direction used to draw text.
Syntax
ctx.direction = "ltr" || "rtl" || "inherit";
Options
Possible values:
"ltr"
- The text direction is left-to-right.
"rtl"
- The text direction is right-to-left.
"inherit"
- The text direction is inherited from the
<canvas>
element or theDocument
as appropriate. Default value.
The default value is "inherit"
.
Examples
Changing text direction
This example draws two pieces of text. The first one is left-to-right, and the second is right-to-left. Note that "Hi!" in ltr
becomes "!Hi" in rtl
.
HTML
<canvas id="canvas"></canvas>
JavaScript
var canvas = document.getElementById('canvas'); var ctx = canvas.getContext('2d'); ctx.font = '48px serif'; ctx.fillText('Hi!', 150, 50); ctx.direction = 'rtl'; ctx.fillText('Hi!', 150, 130);
Result
Specifications
Specification | Status | Comment |
---|---|---|
HTML Living Standard The definition of 'CanvasRenderingContext2D.direction' in that specification. |
Living Standard |
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.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
direction | Chrome
Full support
Yes
| Edge
Full support
≤79
| Firefox No support No | IE No support No | Opera No support No | Safari Full support Yes | WebView Android Full support Yes | Chrome Android Full support Yes | Firefox Android No support No | Opera Android No support No | Safari iOS Full support Yes | Samsung Internet Android Full support Yes |
Legend
- Full support
- Full support
- No support
- No support
- Experimental. Expect behavior to change in the future.
- Experimental. Expect behavior to change in the future.
- User must explicitly enable this feature.
- User must explicitly enable this feature.
See also
- The interface defining this property:
CanvasRenderingContext2D