JSON, which stands for JavaScript Object Notation, is a lightweight format used for storing and transporting data. It is “self-describing” and straightforward to understand, making it an ideal choice for sending data from a server to a web page.

JSON is built around the concept of key-value pairs:
– Key : This is always a string, enclosed in quotation marks.
– Value : This can be a string, number, Boolean expression, array, or object.

When dealing with data received from a web server, it is typically in the form of a string. To handle this data, the `JSON.parse()` method is used to convert the string into a JavaScript object. Conversely, the `JSON.stringify()` method converts a JavaScript object or value into a JSON string. This method can also optionally replace values if a replacer function is provided or include only specified properties if a replacer array is used.

JSON values must adhere to specific data types, including strings, numbers, objects (JSON objects), arrays, booleans, or null. Despite its simplicity, understanding these basic principles allows you to interpret and decode complex JSON data structures, enabling you to work with data across entire websites.

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