js将时间戳转为时间日期格式

小咪咪 2021-09-08 23:38 490阅读 0赞

封装方法

getBeforeDate(num, time) {
                let n = num;
                let d = '';
             if(time) {
                d = new Date(time);
             } else {
                d = new Date();
            }
               let year = d.getFullYear();
               let mon = d.getMonth() + 1;
               let day = d.getDate();
            if(day <= n) {
               if(mon > 1) {
               mon = mon - 1;
           } else {
             year = year - 1;
             mon = 12;
        }
      }
      d.setDate(d.getDate() - n);
      year = d.getFullYear();
      mon = d.getMonth() + 1;
      day = d.getDate();
      let s = year + "-" + (mon < 10 ? ('0' + mon) : mon) + "-" + (day < 10 ? ('0' + day) : day);
      return s;
    },

调用方式

<el-form ref="form" :model="form" :rules="rules" label-width="80px">
                    <el-form-item label="推广时间" prop="time">
                      <el-date-picker v-model="form.time " type="daterange" range-separator="-" start-placeholder="开始日期" end-placeholder="结束日期">
                      </el-date-picker>
                    </el-form-item>
    
    
    
    
    
          form: {
            time: [],
          },
          rules: {
            time: [{ required: true, message: '请选择推广时间', trigger: 'change' }],
          },

this.timestart = this.form.time[0].getTime();  //当前选择的时间选择 初始时间
          console.log(this.timestart);
          let strtimeStart = this.getBeforeDate(0, this.timestart) +" 00:00:00";  //转为时间宣选择
          console.log(strtimeStart)
          this.timestend =this.form.time[1].getTime()  //当前选择的时间选择 结束时间
           let strtimeEnd = this.getBeforeDate(0, this.timestart) +" 00:00:00";  //转为时间宣选择
          onsole.log(strtimeEnd)