elmentUI组建中el-date-picker实现限制时间范围精确到小时

elmentUI组建中el-date-picker实现限制时间范围精确到小时

需求要求

1. 时间选择器只能选择今天之前的日期.默认时间是前一天00点~23点
2. 后台返回的最小时间和最大时间
3. 时间精度限制到小时
   开始想着用type="datetimerange"来实现,后来发现控制时间禁用无法实现,后改变思路使用两个type="datetime"拼装

实现

1.先获取一个只能选择到小时的时间范围选择器

css代码

<el-date-picker
            v-model="validity1"
            type="datetime"
            value-format="yyyy-MM-dd HH"
            format="yyyy/MM/dd HH"
            class="datepicker-content"
            :picker-options="datapickerOptions1"
            popper-class="datepickerPopperClass"
            @change="changeDatetime"
            placeholder="起始时间"
            :clearable="false"
          >
          </el-date-picker>
          ~
          <el-date-picker
            v-model="validity2"
            type="datetime"
            value-format="yyyy-MM-dd HH"
            format="yyyy/MM/dd HH"
            class="datepicker-content"
            popper-class="datepickerPopperClass"
            :picker-options="datapickerOptions2"
            placeholder="结束时间"
            :disabled="!validity1"
            :clearable="false"
          >
          </el-date-picker>

如何实现精度到小时,使选择器只能选择到时间(如图)

通过修改css样式实现代码,隐藏分秒结构

.datepickerPopperClass{
  .el-button--text{
    display: none;  //删除时间弹框中此刻按钮(根据需求决定是否保留)
  }
  .el-time-spinner__wrapper{
    width:100%;
  }
  .el-scrollbar:nth-child(2){
    display: none;
  }
}

这样结构上就有一个只能选择到小时的时间范围选择器,这里结束时间在没有选择开始时间时是禁用的

2.通过picker-options属性来控制时间可选日期范围

其中disabledDate属性值来控制选择的日期范围,selectableRange属性值控制可选择的小时范围
vue中data中声明的变量

data() {
    return {
      validity1:'',
      selectableRange1:"00:00:00 - 23:59:59",
      validity2:"",
      selectableRange2:"00:00:00 - 23:59:59",
      startTime:"",   //从后台获取的库表生成时间,之前的时间不能选择,这个值可以根据你需求中的时间来赋值
      endTime:"",      //数据库结束时间
      datapickerOptions1: {
        //设置不能选择的日期
        selectableRange: this.selectableRange1,
        disabledDate: (time) => {
          //获取当前时间
          let nowDate = new Date();
          const oneHour = 1 * 3600 * 1000; //一个小时
          let defaultTime = this.formatDate(nowDate.getTime()-oneHour,"yyyy-MM-dd hh")
          let startTime = this.startTime.split(' ')[0]+" 00:00:00" 
          defaultTime = defaultTime + ":59:59"
          return time.getTime() > new Date(defaultTime)||time.getTime() < new Date(startTime);
        },
      },
      datapickerOptions2: {
        //设置不能选择的日期
        selectableRange: this.selectableRange2,
        disabledDate: (time) => {
          //获取当前时间
          let nowDate = new Date();
          const oneHour = 1 * 3600 * 1000; //一个小时
          let defaultTime = this.formatDate(nowDate.getTime()-oneHour,"yyyy-MM-dd hh")
          let validityTime = this.validity1.split(' ')[0]+" 00:00:00"
          defaultTime = defaultTime + ":59:59"
          return time.getTime() > new Date(defaultTime)||time.getTime() < new Date(validityTime);
        },
      },
    };
  },

通过watch来监控起始时间和结束时间,日期选择后,相应的小时选择范围也会变化

watch:{
    validity1: {
      // date-picker控件点x清空之后默认会重置为null，监听设置为["",""]
      handler(newVal) {
        if (newVal) {
          // console.log("newVal",newVal)
          // console.log(this.startTime)
          if(new Date(newVal+":00:00").getTime()<new Date(this.startTime).getTime()){
            this.validity1 = this.formatDate(this.startTime.split(' ')[0],"yyyy-MM-dd") + " " + this.startTime.split(' ')[1].split(':')[0]+":00"
            // console.log("validity1",this.validity1)
          }
          let rangeStart = ""
          let rangeEnd = ""
          //如果选择的日期是后台库表初始日期
          if(this.startTime){
            if(newVal.split(' ')[0]==this.formatDate(this.startTime.split(' ')[0],"yyyy-MM-dd")){
              rangeStart = this.startTime.split(' ')[1]
            }else{
              rangeStart = "00:00:00"
            }
          }else{
            rangeStart = "00:00:00"
          }
          if(this.endTime){
            if(newVal.split(' ')[0]==this.formatDate(this.endTime.split(' ')[0],"yyyy-MM-dd")){
              rangeEnd = this.endTime.split(' ')[1]
            }else{
              rangeEnd = "23:59:59"
            }
          }else{
            rangeEnd = "23:59:59"
          }
          this.selectableRange1 = rangeStart + " - " + rangeEnd
          this.$set(this.datapickerOptions1,"selectableRange",this.selectableRange1)
        }
      },
      immediate: true,
      deep: true,
    },
    validity2: {
      // date-picker控件点x清空之后默认会重置为null，监听设置为["",""]
      handler(newVal) {
        if (newVal) {
          // console.log("newVal",newVal)
           if(new Date(newVal).getTime()<new Date(this.validity1).getTime()){
            this.validity2 = this.validity1.split(':')[0]+ ":59"
          }
          let rangeStart = ""
          let rangeEnd = ""
          //如果选择的日期是后台库表初始日期
          if(new Date(newVal.split(' ')[0]).getTime()==new Date(this.validity1.split(' ')[0]).getTime()){
            rangeStart = this.validity1.split(' ')[1].split(':')[0] + ":59:59"
          }else{
            this.selectableRange2 = "00:59:59"
          }
          if(this.endTime){
            if(newVal.split(' ')[0]==this.formatDate(this.endTime.split(' ')[0],"yyyy-MM-dd")){
              rangeEnd = this.endTime.split(' ')[1]
            }else{
              rangeEnd = "23:59:59"
            }
          }else{
            rangeEnd = "23:59:59"
          }
          this.selectableRange2 = rangeStart + " - " + rangeEnd
          this.$set(this.datapickerOptions2,"selectableRange",this.selectableRange2)
        }
      },
      immediate: true,
      deep: true,
    },
  },

其中用到的时间格式化方法formatDate

filters: {
    formatDate: function(time) {
      if (time != null && time != "") {
        var date = new Date(time);
        return formatTimeToStr(date, "yyyy/MM/dd hh:mm:ss");
      } else {
        return "";
      }
    },
  },

date.js

export function formatTimeToStr(times, pattern) {
    var d = new Date(times).Format("yyyy-MM-dd hh:mm:ss");
    if (pattern) {
        d = new Date(times).Format(pattern);
    }
    return d.toLocaleString();
}

起始时间选择后,结束时间才可以显示同时结束时间清空

changeDatetime(){
    this.validity2 = ""
   },

希望对你有帮助