comments in json

Comments in JSON

If you are working with JSON (JavaScript Object Notation) files, you may come across the need to include comments within your code. Comments are lines of text that are not executed by the computer, but are used to provide information to other programmers who may be reading your code.

Why are comments important?

Comments are important in coding because they help you and other developers understand why specific lines of code were written and how they work. They can also help others who may be unfamiliar with the code to quickly understand the purpose and functionality of different parts of the code.

How to include comments in JSON

JSON files don't natively support comments, unlike other programming languages like JavaScript. However, there are a few workarounds you can use to include comments in your JSON files.

  • Option 1: Use single-line Javascript-style comments

    "name": "John Doe",
    "age": 30,
    //"address": "123 Main St", // Commented out for testing purposes
    "email": "[email protected]"

In this example, we've included a comment using double slashes (//) just like you would in JavaScript. When the JSON file is parsed, the commented-out line will be ignored and not included in the resulting object.

  • Option 2: Use multi-line Javascript-style comments

    "name": "John Doe",
    "age": 30,
    "address": {
        "street": "123 Main St",
        "city": "Anytown",
        "state": "CA"
    */ // Commented out for testing purposes
    "email": "[email protected]"

This option uses multi-line comments (/* */) which can span multiple lines. When the JSON file is parsed, any content within the comment block will be ignored.


While JSON doesn't have native support for comments, there are a few ways you can include them in your code. Single-line and multi-line Javascript-style comments are two common workarounds. Regardless of which method you choose, comments are an essential part of good programming practice and can help you and other developers better understand your code.

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