关于日期的方法们

getDate：https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Date/getDate

setDate：

JavaScript Date setDate() 方法

      const now = new Date();
      const sevenDaysAgo = new Date();
      sevenDaysAgo.setDate(now.getDate() - 7);

这段代码：

 getSevenDay() {
      const now = new Date();
      const sevenDaysAgo = new Date();
      sevenDaysAgo.setDate(now.getDate() - 7);
      // this.queryParams.pickTime = [sevenDaysAgo, now];
      this.pickTimeArr = [sevenDaysAgo, now];
      const yearEnd = now.getFullYear();
      const monthEnd = String(now.getMonth() + 1).padStart(2, '0');
      const dayEnd = String(now.getDate()).padStart(2, '0');
      // 获取当前时间
      const hoursNow = String(now.getHours()).padStart(2, '0');
      const minutesNow = String(now.getMinutes()).padStart(2, '0');
      const secondsNow = String(now.getSeconds()).padStart(2, '0');
      this.queryParams.pickTimeEnd = `${yearEnd}-${monthEnd}-${dayEnd} ${hoursNow}:${minutesNow}:${secondsNow}`;

      const yearStart = sevenDaysAgo.getFullYear();
      const monthStart = String(sevenDaysAgo.getMonth() + 1).padStart(2, '0');
      const dayStart = String(sevenDaysAgo.getDate()).padStart(2, '0');

      this.queryParams.pickTimeStart = `${yearStart}-${monthStart}-${dayStart} ${hoursNow}:${minutesNow}:${secondsNow}`;
    }