时间选择器 element

<el-date-picker
              type="datetime"
              placeholder="选择上线日期"
              :picker-options="startDatePicker"
              v-model="addStartPageForm.onlineTime"
              value-format="yyyy-MM-dd HH:mm:ss"
              style="width: 100%;"
   ></el-date-picker>

<el-date-picker
              type="datetime"
              placeholder="选择下线日期"
              v-model="addStartPageForm.downlineTime"
              :picker-options="endDatePicker"
              value-format="yyyy-MM-dd HH:mm:ss"
              @change="checkDateTime"
              style="width: 100%;"
  ></el-date-picker>

data
startDatePicker: {},
 endDatePicker: {},

method

 //设置开始时间 禁用昨天和以前时间
    beginDate() {
      return {
        disabledDate(time) {
          return new Date().getTime() - 60 * 60 * 24 * 1000 >= time.getTime();
        },
      };
    },
    //设置结束时间 禁用昨天和以前时间
    processDate() {
      const _this = this;
      return {
        disabledDate(time) {
          if (_this.addStartPageForm.onlineTime) {
            return (
              new Date(_this.addStartPageForm.onlineTime).getTime() -
                60 * 60 * 24 * 1000 >=
              time.getTime()
            );
          }
        },
      };
    },
    //结束时间必须大于开始时间
    checkDateTime(val) {
      if (
        this.addStartPageForm.onlineTime &&
        this.addStartPageForm.downlineTime
      ) {
        if (new Date(this.addStartPageForm.onlineTime) > new Date(val)) {
          this.$message.error("结束时间必须大于开始时间");
          this.addStartPageForm.downlineTime = "";
        }
      }
    },

 created() {
this.startDatePicker = this.beginDate(); //设置开始时间
    this.endDatePicker = this.processDate(); //设置结束时间
  },