On the PHP server side, there are concepts of Session and Cookie, and on the JS side, there are corresponding concepts of Session and Cookie. Cookie of JS, you can use cookie.js to complete the corresponding operation.
For details, see the chapter Cookie.js realizes the operation of saving user name and password (4) . Use sessionStorage when session. Storage means storage.
1. Setting the value
sessionStorage.setItem(key,value);
Set the value of an element, setItem. Similar to server-side setAttribute();
2. Get the value
var data=sessionStorage.getItem(key);
Similar to the server-side getAttribute(); method
3. Delete value
sessionStorage.removeItem(key);
Similar to the removeAttribute() method on the server side.
4. Clear all the values in the Session
sessionStorage.clear();
Similar to session.invalidate() on the server side;
5. Use
Sometimes, the value is placed in JS. When the page is refreshed, the JS will be refreshed again, and the set value will return to the original value. If you don’t want this, you can place this value in the JS session. Use sessionStorage to make the corresponding settings.
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