vue中默认聚焦的方法、默认按钮高亮、input聚焦等等

1、原生基础组件

<button @click="myFocus" ref="toFocus"><button>
this.$refs.toFocus.focus();

2、封装组件、element组件等

    需要多加一层 .$el

<el-button type="primary" size="mini" @click="routerLink" ref="buttonFocus">信息维护</el-button>
this.$refs.buttonFocus.$el.focus();