el-date-picker时间选择器默认时间为前7天（15天）

用element框架中的el-date-picker做了一个时间选择器，默认显示的是当天~前7天(或15)的时间差，下面编程教程网小编给大家介绍一下代码。

el-date-picker组件

<el-date-picker
   :editable="false"
   :clearable="false"
   v-model="dateTime"
   type="daterange"
   range-separator="至"
   start-placeholder="开始日期"
   end-placeholder="结束日期"
   :picker-options="pickerOptions"
   format="yyyy-MM-dd"
   value-format="yyyy-MM-dd">
</el-date-picker>

方法介绍：

data(){
  return {
    dateTime:[],
    //不能选择当前日期之后的时间
    pickerOptions: {
        disabledDate(time) {
          return time.getTime() > Date.now();
        }
      },
  }  
}

created() {
  if (process.client) {
    const that = this;
    that.getTimeFn();
  }
},   
methods: {
  //设置默认时间
  getTimeFn() {
    const that = this;
    const end = new Date();
    const start = new Date();
    start.setTime(start.getTime() - 3600 * 1000 * 24 * 7); //15天把7改掉
    that.deviceFormData.time[0] = that.formatDate(start);
    that.deviceFormData.time[1] = that.formatDate(end);
  },
  //格式化时间
  formatDate(date) {
    var myyear = date.getFullYear();
    var mymonth = date.getMonth() + 1;
    var myweekday = date.getDate();
  
    if (mymonth < 10) {
      mymonth = "0" + mymonth;
    }
    if (myweekday < 10) {
      myweekday = "0" + myweekday;
    }
    return myyear + "-" + mymonth + "-" + myweekday;
  },
}