<input ref="code" type="text"  @keyup.enter="enterPress()" v-model="code"/>

export default {
    data() {
	return {
            code:'',
        }
    },
    methods:{
        enterPress() {//回车事件
            this.$refs.code.select();//输入框选中状态
        }
    },
    mounted() {
	this.$nextTick(() => {
	  this.$refs.code.focus();//输入框默认获取焦点
	});
    },
    
}