<input onkeyup="value=value.replace(/[^\d.]/g,'')" />or<input oninput="value=value.replace(/[^\d.]/g,'')" />

constructor(props) {super(props);this.myRef= React.createRef();}<ulref={this.myRef}onScroll={() => this._onScroll()}className="scroll"><li&...

vue-cli3以上配置module.exports = {css: {loaderOptions: {less: {javascriptEnabled: true}}}}vue-cli3以下版本// module.rules{test: /\.less/,exclude: /node_modules/,use: ['style-loader', 'css-loader', {loader:

1.打开 nvm安装目录/settings.text文件2.添加两行node_mirror:npm.taobao.org/mirrors/node/npm_mirror:npm.taobao.org/mirrors/npm/3.然后继续安装nvm 安装指定版本nodejs命令nvm install xx.xx.xxeg: nvm install 6.16.0

textarea{-webkit-appearance: none;appearance: none;}