elementUI el-input聚焦

           inputFocus(){
                this.$nextTick(function () {
                    this.$refs.customerInput.$el.querySelector('input').focus();
                });
            },

　　1.组件

<el-button @click="inputFocus">聚焦按钮</el-button>
<el-input ref="customerInput" v-model="form.num" @blur="blurSearchFor"></el-input>