Top Free JSON Format Courses

JSON stands for JavaScript Object Notation. It is a file format that is utilized for storing information. This information is stored in an easy-to-access organized method. These stored data can be accessed logically, and they are human-readable. As the name suggests, it is an extension of the JavaScript language. The “.json” extension denotes all JSON files. JSON is used by APIs and JavaScript applications. It helps transfer data between web applications and web servers.

Web services, APIs, and JavaScript applications use JSON format to provide public data. JSON is compatible with modern languages. It is easy to write and read. Here is the pseudocode as an example to show how to store data using JSON format. 

{

“course” : [

{

“id” : “01”,

“ name” : “JSON format”,

“level” : “Beginner”

}

{

“id” : “02”,

“ name” : “Data Science”,

“level” : “Advance”

}

]

}

Because JSON is closely related to JavaScript, its syntax can be considered the JavaScript syntax subset. The two data structures supported by JSON are the collection of name-value pairs and ordered list values. Data is stored in the name-value pairs. Curly braces represent an object where the names are followed by the colon and the value. Commas separate these name-value pairs, whereas square brackets hold arrays and values. A comma also separates these.

JSON supports Number, Boolean, String, Array, Object, Value, Whitespace, and Null data types. The number is determined by double-precision floating-point JavaScript format. Integer, Fraction, and Exponent are the types of it. Boolean has two values, which are True and False. A string is formed when many characters come together.

An array is a collection of data. To specify the start and end of an array, square brackets are used. A comma separates these values of the array. An object represents an unordered set of name-value pairs, which are enclosed between the curly braces. Here, the name is followed by the value. Colon is used for denoting name and its value. JSON Values include number, boolean, string, object, array, and null. Whitespaces help in making the code more readable and are seen between any number of tokens. 

JavaScript is used for creating JSON objects. Use var JSONObj = { }; command to create an empty object. For creating a new object, use var JSONObj = new object(); command. The structure of the JSON data can be specified with the help of JSON Schema. It allows you to describe the existing data format. It lets you create simple, machine and human-readable documentation. JSON Schema is very useful for automated testing as it supports complete structural validation. 

JSON and XML both are language independent and provide human-readable formats. The most attractive feature of these two formats is their ability to support the reading, creation, and decoding according to real-time problems. JSON is faster to understand and use. It is used for describing the structured array of data. When the eval method of JavaScript parses the JSON file, it returns the defined object. You can also utilize PHP language to encode and decode objects defined in JSON.  

There are many other features of JSON for you to explore. You will be enthusiastic to know how the JSON format works and why it is implemented in websites and applications. To learn JSON format from scratch, enroll in Great Learning Academy’s free JSON format courses. Complete the enrolled courses successfully to attain free JSON certificates.