初始化

uni_modules/UniDevTools/node_modules/safe-area-insets/README.md

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+# safeAreaInsets
+
+Use javascript to get the safe area insets.
+
+Chinese documentation : [中文文档](https://github.com/zhetengbiji/safeAreaInsets/blob/master/README-CH.md)
+
+## Precondition
+
+* WKWebview
+* viewport-fit=cover
+
+## Install
+
+### NPM
+
+```
+npm install safe-area-insets --save
+```
+
+### UMD
+
+```http
+https://unpkg.com/safe-area-insets/out/umd/index.min.js
+```
+
+## Use
+
+### Require
+
+```js
+const safeAreaInsets = require('safe-area-insets')
+```
+
+### Safe Area Info
+
+```js
+console.log('safeAreaInsets.support', safeAreaInsets.support)
+console.log('safe-area-inset-top', safeAreaInsets.top)
+console.log('safe-area-inset-left', safeAreaInsets.left)
+console.log('safe-area-inset-right', safeAreaInsets.right)
+console.log('safe-area-inset-bottom', safeAreaInsets.bottom)
+```
+
+### Listening Change Event
+
+```js
+function callback(style){
+    console.log(style)
+}
+// add
+safeAreaInsets.onChange(callback)
+// remove
+safeAreaInsets.offChange(callback)
+```
+
+## Related Reading
+
+>[Designing Websites for iPhone X](https://webkit.org/blog/7929/designing-websites-for-iphone-x/)