<el-date-picker size="small"   
                 v-model="dateInRange"
                 type="daterange"
                 align="right"
                 unlink-panels
                 range-separator="至"
                 :start-placeholder="defaultBegDataName"
                 :end-placeholder="defaultEndDataName"
                 :picker-options="pickerOptions"
                  value-format
                  :default-value="new Date().getTime()-2592000000"
                  style="margin-left: 0px;width:486px"
              >
              </el-date-picker>
              pickerOptions: {
                shortcuts: [{
                  text: '最近一周',
                  onClick(picker) {
                    const end = new Date();
                    const start = new Date();
                    start.setTime(start.getTime() - (3600 * 1000 * 24 * 7));
                    picker.$emit('pick', [start, end]);
                  }
                }, {
                  text: '最近一個(gè)月',
                  onClick(picker) {
                    const end = new Date();
                    const start = new Date();
                    start.setTime(start.getTime() - (3600 * 1000 * 24 * 30));
                    picker.$emit('pick', [start, end]);
                  }
                }, {
                  text: '最近三個(gè)月',
                  onClick(picker) {
                    const end = new Date();
                    const start = new Date();
                    start.setTime(start.getTime() - (3600 * 1000 * 24 * 90));
                    picker.$emit('pick', [start, end]);
                  }
        }]
      },