How to Share SessionStorage Data Across Browser Tabs?

Sharing SessionStorage Data Across Browser Tabs

Problem:

You want to store data in your website that can be accessed from all tabs and should be cleared when the browser is closed. However, sessionStorage only persists within the current tab.

Question:

How can you share sessionStorage values between all browser tabs within your application?

Answer:

You can utilize localStorage and its "storage" eventListener to transfer sessionStorage data from one tab to another. To implement this:

1. Include the following code on all tabs:

   <code class="js">// transfers sessionStorage from one tab to another
   var sessionStorage_transfer = function(event) {
     // Handle sessionStorage data transfer between tabs
   };
   
   // listen for changes to localStorage
   if(window.addEventListener) {
     window.addEventListener("storage", sessionStorage_transfer, false);
   } else {
     window.attachEvent("onstorage", sessionStorage_transfer);
   };</code>

2. Trigger event to request sessionStorage data from other tabs:

   <code class="js">// Ask other tabs for session storage (this triggers the event)
   if (!sessionStorage.length) {
     localStorage.setItem('getSessionStorage', 'foobar');
     localStorage.removeItem('getSessionStorage', 'foobar');
   };</code>

This solution allows you to share sessionStorage data across all tabs within the same browser. It is a useful technique for maintaining data that needs to be accessible across multiple browser tabs.

The above is the detailed content of How to Share SessionStorage Data Across Browser Tabs?. For more information, please follow other related articles on the PHP Chinese website!