elmentUI 选择年月日时分秒-并且只选择当前时间之后的时间

 pickerBeginDateBefore: {
        disabledDate(value) {
          if (new Date(value).getTime() + 3600 * 1000 * 24 < new Date().getTime()) {
            return true
          }
          return false
        }
      },

.vue

             <el-date-picker
                 :picker-options="pickerBeginDateBefore"
                  v-model="ruleForm.deliverTime"
                  type="datetime"
                  value-format="yyyy-MM-dd HH:mm:ss"
                  :startDate="{now}"
                  placeholder="选择时间">
                </el-date-picker>        

只选择时分秒

 <el-time-picker
                  v-model="ruleForm.deliverTime"
                  :picker-options="{
                    selectableRange: '00:00:01 - 23:59:59'
                  }"
                  placeholder="选择时间">
                </el-time-picker>