Is there a way to transform a JavaScript array into JSON format in order to use it as the returned data from a RESTful API

Currently, I am exploring how to efficiently convert an array of arrays into a JSON string for retrieval through a RESTful API.

On my server, data is fetched from a database in the format:
    {"user":"some name","age":number}

To ensure compliance with the REST specifications, I need to format the data as JSON. At times, there might be a single record to return and sometimes multiple records are involved. Here's a snippet of code I am experimenting with to validate the syntax for JSON conversion:</p>
<pre><code>var resultSet = [];
resultSet.push({"user":"John Doe","age":43});
resultSet.push({"user":"Jane doe","age":29});
var myJson = JSON.parse(resultSet);

Upon executing this script with nodejs, I encounter the error message:

SyntaxError: Unexpected token o in JSON at position 1
    at JSON.parse (<anonymous>)

I welcome any suggestions or insights on resolving this issue. Your assistance would be highly valued.

Answer №1

JSON.parse requires a string as input, but you are passing an Array.

This example will work because the input is a string:

JSON.parse('[{"key": "value"}]')

However, this example will not work because the input is an Array:

JSON.parse([{"key": "value"}])

If your goal is to return a string, use JSON.stringify instead like so:

JSON.stringify([{"key": "value"}])

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