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Last active February 21, 2026 03:02
# How to Use a Browser's Local Storage to Store JSON Data

How to Use a Browser's Local Storage to Store JSON Data

Introduction

JSON (JavaScript Object Notation) and local storage are two powerful tools for any web developer. JSON is a way to represent objects as strings. JSON is widely implemented accros many programming languages and protocols, so it is extremely useful to learn how to convert objects to JSON and back. Local storage is a feature in browsers that allows a website to store data directly within a user's browser. Local storage accepts data in the format of a string, so using JSON with local storage is a great way to store user-specific data without taking up any space on your own web server. It's also a great option if you want to serve web pages that remember data without having a server-side database. This tutorial will walk you through creating a basic web page that stores, retrieves, and displays some very simple JSON objects.

Instructions

Make the user interface:

Create a file, and name it something like localStorage.html. This