如何在本地存储中更新时间戳?

我需要在本地存储中存储和更新时间戳,以便在一分钟后每次都会执行modal。我希望仅当时间戳已过期或超过一分钟时,模式才会出现在刷新时。一分钟的持续时间仅用于测试目的。目标是每天只向用户显示一次模式。这是我到目前为止的情况。它仅在刷新时显示模式,并存储本地存储密钥。但一分钟后,刷新时不会显示模式,应该显示。感谢您的帮助。

    $(document).ready(function() {
          function shouldShowModal() {
              const lastTimestamp = localStorage.getItem("modalTimestamp");
              if (!lastTimestamp) {
                  return true;
              }
              const parsedTimestamp = parseInt(lastTimestamp, 10);
              let expiryLimit = new Date(parsedTimestamp);
              expiryLimit = expiryLimit.setMinutes(expiryLimit.getMinutes() + 1);
              return new Date() > expiryLimit;
          }
    
          if (window.localStorage) {
              const currentUser = '<%= current_user %>';
              const currentTime = new Date($.now());
              if (currentUser && shouldShowModal()) {
                  swal ({
                      icon: 'warning',
                      text: 'Notice text here.',
                      closeOnClickOutside: false,
                      button: 'ok'
                  })
                  localStorage.setItem('modalTimestamp', currentTime);
              }
          }
    }

更新了使用@Barmar解决方案:

    $(document).ready(function() {
          function shouldShowModal() {
              const lastTimestamp = localStorage.getItem("modalTimestamp");
              if (!lastTimestamp) {
                  return true;
              }
              const parsedTimestamp = parseInt(lastTimestamp, 10);
              let expiryLimit = new Date(parsedTimestamp);
              expiryLimit = expiryLimit.setHours(expiryLimit.getHours() + 24);
              return new Date() > expiryLimit;
          }
    
          if (window.localStorage) {
              const currentUser = '<%= current_user %>';
              const currentTime = new Date();
              if (currentUser && shouldShowModal()) {
                  swal ({
                      icon: 'warning',
                      text: 'Notice text here.',
                      closeOnClickOutside: false,
                      button: 'ok'
                  })
                  localStorage.setItem('modalTimestamp', currentTime.getTime());
              }
          }
    }