Secure context
This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
The read-only XRViewport interface's y property indicates the offset from the bottom edge of the destination surface (typically a XRWebGLLayer to the bottom edge of the viewport within the surface into which WebXR content is to be rendered. The viewport's x property identifies the x component of the origin, and its is given by the width and height properties.
Syntax
y = xrViewport.y;
Value
The offset from the bottom edge of the rendering surface to the bottom edge of the viewport, in pixels.
Note: Although other web APIs typically consider the y axis to begin at the top and grow larger progressing downward, WebGL reverses this, with y growing larger as it goes upward on the screen.
Examples
See the main XRViewport page for examples.
Specifications
| Specification | Status | Comment |
|---|---|---|
| WebXR Device API The definition of 'XRViewport.y' in that specification. |
Working Draft | Initial definition. |
Browser compatibility
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
y | Chrome Full support 79 | Edge Full support 79 | Firefox No support No | IE No support No | Opera No support No | Safari No support No | WebView Android No support No | Chrome Android Full support 79 | Firefox Android No support No | Opera Android No support No | Safari iOS No support No | Samsung Internet Android No support No |
Legend
- Full support
- Full support
- No support
- No support