The output of JSON.stringify() when given a single value as input

Question

The output of JSON.stringify() when given a single value as input

The JSON.stringify() function is designed to convert a JavaScript value into JSON format.

console.log(JSON.stringify('a'));
//output: "a"
console.log(JSON.stringify(1));
//output: 1
console.log(JSON.stringify(true));
//output: true

However, technically speaking, the outputs above are not valid JSON formats.

"a"
1
true

The definition of JSON is provided below:

JSON is based on two main structures:

- A collection of name/value pairs. This can be represented as an object, record, struct, dictionary, hash table, keyed list, or associative array in different programming languages.

- An ordered list of values. In many languages, this is represented as an array, vector, list, or sequence.

So, if the inputs mentioned above do not produce valid JSON when passed through JSON.stringify(), the question arises as to why that is the case?

javascript json

Answer 1

Answer №1

The JSON.stringify() function takes a JavaScript value and converts it into a JSON string. You can also specify a replacer function to replace values, or use a replacer array to include only specific properties.

Reference: https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify

"I'm wondering why JSON.stringify() doesn't produce valid JSON when given certain input values?"

Here are some examples of valid JSON syntax:

"hello"
123
true
{}
[]

Try these out:

JSON.parse('"foo"'); // returns "foo"
JSON.parse(123); // returns 123
JSON.parse(true); // returns true
JSON.parse('{}'); // returns {}
JSON.parse('[]');  // returns []

For further information, read the following answers:

Is a simple string considered valid JSON?

What is the minimum valid JSON format?

Answer 2

The JSON.stringify() function takes a JavaScript value and converts it into a JSON string. You can also specify a replacer function to replace values, or use a replacer array to include only specific properties.

Reference: https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify

"I'm wondering why JSON.stringify() doesn't produce valid JSON when given certain input values?"

Here are some examples of valid JSON syntax:

"hello"
123
true
{}
[]

Try these out:

JSON.parse('"foo"'); // returns "foo"
JSON.parse(123); // returns 123
JSON.parse(true); // returns true
JSON.parse('{}'); // returns {}
JSON.parse('[]');  // returns []

For further information, read the following answers:

Is a simple string considered valid JSON?

What is the minimum valid JSON format?

The output of JSON.stringify() when given a single value as input

Answer №1

Similar questions

Unlocking public AWS SSH keys from Vault using jsondecode

Is it possible to utilize the spread operator for combining arrays?

What is the best method for generating an inline keyboard using JSON with several InlineKeyboardButton elements on a single row?

How can I return both a JSON and binary file in an API using REST practices?

How MySQL handles empty variables when inserting data as null

JavaScript tool for connecting tags with JSON properties

Performing a JavaScript/jQuery callback to server without the need for an accompanying executable backend

Tips for extracting a specific key from a Json api response, verifying the presence of additional keys, and adding them to a list if they exist

iOS6: Using POST method to send JSON data from an iPhone to a REST API

Transforming a radio button into a checkbox while successfully saving data to a database (toggling between checked and unchecked)

Retrieve the complete friend list from Facebook and identify those who are celebrating their birthdays today, as well as others

An issue arises when attempting to integrate ajax with colorbox

Combining the powers of Nextjs and Vue

View content from an external file within an iframe

angular failure to assign a variable to $scope

Uncovering Inline Styles Infused with Javascript for Effective Debugging of Javascript Code

JavaScript for loop similar to Python'sIn JavaScript, the

Trigger the animation with a button click by utilizing ng-class in Angular.js

Adding a JavaScript object into the $http service

Splitting jQuery - discover and distribute all price categories