App Localstorage — Free App Development Tutorial
Learn App Localstorage in App Development with a free, beginner-friendly tutorial, examples and practice for Indian students on Syllab.in.
TL;DR: Learn App Localstorage in App Development with a free, beginner-friendly tutorial, examples and practice for Indian students on Syllab.in.
Written & reviewed by the Syllab.in Academic Team (CBSE/NCERT subject experts) · Updated
App Localstorage in App Development
LocalStorage is a browser API that lets you store key-value data persistently in the user's browser.
Data in LocalStorage survives page refreshes and browser restarts, unlike session data.
LocalStorage can only store strings, so objects must be serialized with JSON.stringify() and parsed with JSON.parse().
It has a storage limit of about 5–10 MB per origin and is not suitable for sensitive data.
Common uses include saving user preferences, draft content, shopping cart items, and app state.
App Localstorage — Syntax
// Store data
localStorage.setItem('key', JSON.stringify(value));
// Retrieve data
const value = JSON.parse(localStorage.getItem('key'));
// Remove item
localStorage.removeItem('key');
// Clear all
localStorage.clear();
Learn App Localstorage step by step with Syllab's free interactive App Development tutorial — runnable code examples, practice exercises and instant AI feedback, all free with no signup. Explore the full App Development course →