How to use eval() Function In Javascript

Although it is not recommended due to security concerns, you can use the eval() function to parse JSON data. However, this method executes the code passed to it, which can pose security risks if the JSON data is from an untrusted source.

Syntax:

let jsonObject = eval('(' + jsonString + ')');

Example: Parsing the Person JSON data using the eval() method.

JavaScript

let jsonString = '{"name": "ABC", "age": 30}';
let jsonObject = eval('(' + jsonString + ')');
console.log(jsonObject.name); 
console.log(jsonObject.age);

Output

ABC
30

How to Parse JSON Data in JavaScript ?

JSON (JavaScript Object Notation) is a lightweight data-interchange format that is easy for humans to read and write. It is easy for machines to parse and generate it. In JavaScript, parsing JSON data is a common task when dealing with APIs or exchanging data between the client and server.