Ep11 understanding json and local storage in javascript

episode 11: mastering json and local storage in javascript

welcome to a deep dive into json and local storage, two essential concepts for any javascript developer. this tutorial will provide a comprehensive understanding of these technologies, including their purpose, syntax, usage, and practical examples.

**what you will learn:**

* **json (javascript object notation):**
* what is json and why is it important?
* json syntax rules and data types.
* converting javascript objects to json strings (serialization).
* parsing json strings into javascript objects (deserialization).
* **local storage:**
* what is local storage and how does it work?
* the browser's local storage api (`localstorage`).
* storing data in local storage.
* retrieving data from local storage.
* updating data in local storage.
* removing data from local storage.
* limitations of local storage (size and security).
* **combining json and local storage:**
* storing javascript objects in local storage as json strings.
* retrieving json strings from local storage and parsing them into javascript objects.
* **error handling and best practices:**
* handling potential errors when parsing json.
* strategies for preventing data loss and ensuring data integrity.
* **real-world examples:**
* building a simple to-do list application using json and local storage.
* saving user preferences in local storage.
* caching api responses using local storage.

**1. json (javascript object notation)**

**1.1. what is json and why is it important?**

json (javascript object notation) is a lightweight data-interchange format. it is easy for humans to read and write, and easy for machines to parse and generate. json is based on a subset of the javascript programming language, standard ecma-262 3rd edition - december 1999. json is a text format that is completely language independent but uses conventions t ...

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