Mobile Devices and Local Storage: What You Need to Know for Safe and Efficient Use. Looking for advice from experienced developers

Need help with caching user input on an Angular11 + Firebase app? Let's discuss implementing a caching feature for a dynamic form section that can contain varying fields based on the use case.

The goal is to save user input in LocalStorage to ensure data persistence in case of network issues, page reloads, or other errors. Currently, all input data is lost upon page reload, which can be frustrating for users.

Question: Is LocalStorage API reliable for this task across Android/iOS devices? While it works well on desktop browsers, there may be limitations on mobile devices where most users access the app.

Seeking insights, tips, and personal experiences on using LocalStorage on mobile devices as I urgently need a solution before time runs out. Your input would be greatly appreciated!

javascriptangulartypescriptfirebaselocal-storage

Answer №1

Deciding whether localStorage is the right choice for your specific situation can be a challenge without more information, but in general, it allows you to store data across sessions. If you only need to cache data for a single session (until the page is closed), then sessionStorage might be more suitable.

Compatibility with mobile devices will vary depending on the versions and browsers you are targeting. As long as the browsers you need support localStorage, there shouldn't be significant differences compared to desktop usage.

To verify compatibility, you can refer to Can I Use and follow the guidance outlined here to check if localStorage is accessible:

var storage;
var fail;
var uid;
try {
    uid = new Date;
    (storage = window.localStorage).setItem(uid, uid);
    fail = storage.getItem(uid) != uid;
    storage.removeItem(uid);
    fail && (storage = false);
} catch (exception) {}

if (storage) {
    // Utilize `storage` like this
    storage.setItem('foo', 'bar');
}

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