react

```js import React, { useRef } from "react"; export default function App() { const inputVal = useRef

```js import React, { Component } from 'react' export default class App extends Component { showData

1、 安装postcss-px-to-viewport 2、在umirc中引入postcss-px-to-viewport这个模块

如果是字符串变量中包含\n换行符，只需在css样式中加入whiteSpace: 'pre-wrap' 即可实现解析\n换行符。例如：