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Stefan Omerovic
Stefan Omerovic

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Learn JSON in Just 15 Minutes - JSON Crash Course

JSON, or JavaScript Object Notation, is a lightweight data-interchange format that is easy for humans to read and write and easy for machines to parse and generate.It is based on a subset of the JavaScript Programming Language.

To learn JSON in 15 Minutes, Watch This Video!

JSON is a text format that is completely language-independent but uses conventions that are familiar to programmers of the C-family of languages, including C, C++, C#, Java, JavaScript, Perl, Python, and many others.

One of the main advantages of using JSON is its ability to transmit data between a server and a web application, as well as between different systems. This makes it an ideal choice for web and mobile applications that need to transmit data over a network. Additionally, JSON is also easy to read and understand, making it a popular choice for data storage and sharing.

Getting started with JSON is easy. Here are the basics:

  1. JSON consists of key-value pairs, similar to a dictionary in Python or an object in JavaScript. The key is a string, and the value can be a string, number, boolean, null, array, or another JSON object.
  2. JSON uses double quotes for keys and values, and each key-value pair is separated by a comma.
  3. JSON objects are enclosed in curly braces {} and arrays are enclosed in square brackets [].
  4. Here is an example of a JSON object:
    "name": "John Smith",
    "age": 30,
    "isStudent": false,
    "courses": ["math", "science", "history"]
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  1. To parse a JSON object in JavaScript, you can use the JSON.parse() method, like this:
let jsonData = '{"name":"John Smith","age":30,"isStudent":false,"courses":["math","science","history"]}';
let obj = JSON.parse(jsonData);
console.log(; // "John Smith"
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With just these basic concepts, you can start working with JSON in your web and mobile applications. And as you can see, you can learn JSON in just 15 minutes!

JSON is very useful and widely used format in today's web development, it's lightweight and easy to use, so it's a good idea to have a basic understanding of it.

Once again, to learn JSON in 15 Minutes, Watch This Video!

Top comments (2)

sloan profile image
Sloan the DEV Moderator

Hi there, we encourage authors to share their entire posts here on DEV, rather than mostly pointing to an external link. Doing so helps ensure that readers donโ€™t have to jump around to too many different pages, and it helps focus the conversation right here in the comments section.

If you choose to do so, you also have the option to add a canonical URL directly to your post.

omerko96 profile image
Stefan Omerovic

Yes, I understand. The video has a small project with the similar procedure as this blog post. Not checking the video won't make much of a difference, but thanks for mentioning this so I can know for the future blog posts.