When it comes to storing data on the website for individual clients, localStorage is the go-to solution. It allows you to store data that can be accessed the next time the user loads the page, perfect for storing small amounts of data. However, this data is not shareable with other users. If your app doesn't require high levels of security or data sharing, localStorage is a simple and effective option. Just keep in mind that users have control over what's stored, so avoid storing sensitive information. Also, as a developer, you won't be able to directly view the data stored in localStorage on your website. All operations need to be handled on the client side, but the process is straightforward and supported by all browsers.
To set a value in localStorage, use:
localStorage.foo = "bar";
To retrieve a value from localStorage:
localStorage.foo; //Returns "bar"
One limitation is that localStorage values can only be stored as strings. To store an array, convert it to a string using JSON:
localStorage.arr = JSON.stringify([1, 2, 3]);
When retrieving the array from localStorage:
JSON.parse(localStorage.arr)
These are the essential steps for your needs. For a comprehensive guide on localStorage, check out: https://developer.mozilla.org/en-US/docs/Web/API/Window/localStorage
I hope this information proves helpful.