In this article, you'll learn how to use the
JSON.stringify() method accepts up to three parameters: the JSON object, a replacer, and space. Only the JSON object is required. The remaining two parameters are optional.
If you skip the optional parameters when calling
JSON.stringify(), the output JSON string will not include any spaces or line breaks. This makes it hard to read the serialized JSON string especially when you write it in a file.
To improve the readability, what you can do is pass in a number as the 3rd argument representing the total white spaces to insert. The white space count must be between 0 and 10:
The above example will serialize the JSON object to the following string:
As you can see above, the serialized JSON string is properly formatted and is way more human-readable than the default behavior. Here is how the output JSON string looks like when you omit the space parameter: