vue和原生自动聚焦

原生聚焦:autofocus="autofocus"

<input type="text" id="username" name="username" autofocus="autofocus"/>

vue聚焦:this.$refs.input.focus()

<input type="text" placeholder="说些什么吧" ref="input" />

mounted() {
  this.$nextTick(() => {
    this.$refs.input.focus();
  });
},