怎么在el-datepicker中点击此刻按钮,然后再当前时间的基础上加1小时

<el-date-picker v-model="value1" type="datetime" placeholder="选择日期时间" @change="timeChange">
timeChange() {
this.value1= new Date(this.value1.setHours(new Date().getHours() + 1));
},
记得在data里加value1.