Javascript 跨页面存储信息

Question

我一直在尝试使用 sessionStorage 跨页面保存 JavaScript 变量。

据我了解，语法是:

sessionStorage.setItem('whateverkey', 'whatever value');

有没有办法在sessionStorage中保存变量，或者其他简单的方法来保存跨页面的信息

提前致谢!

Answer 1

My value is 'null' when I try to access it from another page.

这是exactly how sessionStorage is designed to work :

The sessionStorage property allows you to access a session Storage object. sessionStorage is similar to Window.localStorage, the only difference is while data stored in localStorage has no expiration set, data stored in sessionStorage gets cleared when the page session ends. A page session lasts for as long as the browser is open and survives over page reloads and restores. Opening a page in a new tab or window will cause a new session to be initiated, which differs from how session cookies work.

如果您希望数据在同一源的跨页面上保留，请改用 localStorage。