# Dimensions
- category: API
- chinese: 屏幕参数
- type: API
---
## Usage
Because the weex container does not support height: 100%. When you need to get the `REM` value of the screen width, hegith and set the style, you may be use the Dimensions component.
## API
### Dimensions.get('window/screen')
catch the size of window or screen, default vertical.
```js
//catch width and height of the screen (rem)
let { height, width } = Dimensions.get('window');
```
### Dimensions.getWindowInfo(isLandscape)
When `isLandscape` is true, it returns the width of the screen.
**You need to open the current page under the container screen, otherwise the unpredictable value will appear.**
```js
// Catch width and height in horizontal screen mode
let { height, width } = Dimensions.getWindowInfo(true);
```
## The Other
- Chat with @翊晨[yichen] in Dingtalk desktop App Download
- DingTalk Group
