ivew 双向绑定时间控件

   <FormItem label="开始时间" style="width: 100%" prop="startDate">
        <DatePicker
          type="datetime"
          format="yyyy-MM-dd HH:mm:ss"
          v-model="formValidate.startDate"
          @on-change="formValidate.startDate=$event"
          placeholder="选择日期"
        ></DatePicker>
      </FormItem>