Both of these formats are extremely near to human-readable and share many characteristics. For example, with this simple Node.“This article will show you how to convert a JSON-formatted file to YAML. To remove comments in a JSON file without using external libraries, you can preload the file from the disk and remove all comments from it before parsing. How to remove JSON comments using Node.js? strip-json-comments will replace single-line comments "//" and multi-line comments /* */ with spaces.JSMin is a minification tool for JavaScript that removes comments and unnecessary whitespace from JavaScript files that can be used for JSON files.
JSON.minify will help you discard C/C++ style comments with JavaScript and Node.js.Let's take a look at popular tools that help remove comments from JSON files before parsing them: These tools help us avoid parsing errors, use comments in any form, and avoid treating them as data. We can also use special tools that preprocess JSON files and strip comments from JSON before passing those files to JSON parsing libraries. Therefore, your server should ignore this element when processing the received JSON.Īdding Comments to JSON Using External Tools This custom comment element will be received and processed in the same way as any other data in JSON on the server-side. The underscore is used as a convention to distinguish comments from the rest of the data. We added the comment as a custom "_comment" element to this JSON comment example. Since JSON is a textual format for storing and exchanging data using key-value pairs, we can add comments as data pairs in JSON. Adding JSON comments as custom JSON elements Unlike JSON comments, XML comments are supported out of the box. Therefore, the only option for adding comments to JSON is a workaround to use custom elements to store comments in a JSON file. He describes why he removed the comments from the JSON as follows: I removed comments from JSON because I saw people using them to store parsing directives, which would break compatibility. Why doesn't JSON support comments?ĭouglas Crockford, who popularized the JSON data format, deliberately removed comments from JSON to prevent misuse of the JSON format and keep it as a data-only format. You can add comments to JSON as custom JSON elements that will hold your comments, but these elements will still be data. Comments in the form //, #, or /* */, which are used in popular programming languages, are not allowed in JSON. The MIME type for JSON is application/json. JSON is used when sending data to or from the server and making API calls. JSON (JavaScript Object Notation) is a lightweight text format for storing and transmitting data over a network.
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