How to compare users localStorage / cookie data

Im working on a little web game right now and I want to make a leaderboard, to store all user info ive been using localStorage, I want to be able to constantly check if one users money is greater than the highscore, if it is set the highscore to their money and username(The idea here is that everyone can see the highscore so when it updates everyone sees that variable)

Ive tried to find online resources about how to compare and contrast cookies / localStorage among users but I cant find anything that really helps

>Solution :

To compare and update the highscore using localStorage, you can follow these steps:

1. When a user’s game session ends and you want to check if their money is greater than the current highscore, retrieve the current highscore from localStorage.

var currentHighscore = localStorage.getItem('highscore');

2. Compare the user’s money with the current highscore.

var userMoney = /* get the user's money */;
if (userMoney > currentHighscore) {
    // Update the highscore
    localStorage.setItem('highscore', userMoney);
    localStorage.setItem('username', /* get the user's username */);
}

3. To display the highscore, retrieve it from localStorage and update the corresponding HTML element.

var highscoreElement = document.getElementById('highscore');
var highscore = localStorage.getItem('highscore');
var username = localStorage.getItem('username');
highscoreElement.textContent = 'Highscore: ' + username + ' - ' + highscore;

Make sure you have unique identifiers for the highscore and username in localStorage, such as using ‘highscore’ and ‘username’ as keys. This way, the highscore and username will be updated for all users who access the leaderboard page.

Remember that localStorage is specific to each user’s browser, so it won’t directly update the highscore for all users in real-time. To achieve that, you might need to use server-side storage or a database to store and retrieve the highscore data.

To handle the entire process of updating and displaying a shared highscore leaderboard, you’ll need to implement both the client-side and server-side components. Here’s a more detailed explanation of the steps involved:

Client-Side (Frontend):

1. When a user’s game session ends and you want to update the highscore:

   • Collect the user’s information, such as username and money.
   • Send an HTTP request (e.g., using fetch or XMLHttpRequest) to the server, including the user’s information.

2. When users access the leaderboard page:

   • Send an HTTP request to the server to retrieve the current highscore data.
   • Update the leaderboard display on the frontend based on the received data.

Server-Side (Backend):

1. Set up a backend server using a language/framework of your choice (e.g., Node.js with Express, Python with Flask, etc.).

   • Implement routes to handle the leaderboard-related requests.

2. When receiving a request to update the highscore:

   • Retrieve the user’s information from the request payload.
   • Compare the user’s money with the current highscore (stored on the server).
   • If the user’s money is higher, update the highscore data on the server.

3. When receiving a request to retrieve the highscore:

   • Fetch the current highscore data from the server.
   • Send the highscore data as a response to the client.

4. Store the highscore data on the server:

   • You can use a database (e.g., MySQL, MongoDB) to store and manage the highscore data.
   • Implement the necessary database operations (e.g., insert/update/retrieve) to handle the highscore data.

By combining both the client-side and server-side components, you can achieve a shared highscore leaderboard that is visible to all users. The server will act as a central storage for the highscore data and provide it to the clients upon request.

Remember to handle any necessary error checking, input validation, and security considerations on both the client and server sides to ensure the integrity and reliability of the highscore system.