How to Convert String of Objects to Array in JavaScript ?

This article will show you how to convert a string of objects to an array in JavaScript. You have a string representing objects, and you need to convert it into an actual array of objects for further processing. This is a common scenario when dealing with JSON data received from a server or stored in a file.

Using JSON.parse() Method

The most common and straightforward way to convert a string of objects to an array of objects is by using JSON.parse() method. This method parses a JSON string into a JavaScript object or array.

Example: This example shows the use of the above-mentioned approach.

Javascript

let str = '[{"company":"Geeks", "contact":"+91-9876543210"}, 
  {"address":"sector 136", "mail":"xys@geeksforgeeks.org"}]';
let arr = JSON.parse(str);

console.log(arr);

Output

[
  { company: 'Geeks', contact: '+91-9876543210' },
  { address: 'sector 136', mail: 'xys@geeksforgeeks.org' }
]

Using eval() Method

Another approach to convert a string of objects to an array is by using the eval() function. However, this method is generally not recommended due to security risks associated with executing arbitrary code.

Example: This example shows the use of the above-explained approach.

Javascript

let str = '[{"company":"Geeks", "contact":"+91-9876543210"}, 
  {"address":"sector 136", "mail":"xys@geeksforgeeks.org"}]';

let arr = eval(str);

console.log(arr);

Output

[
  { company: 'Geeks', contact: '+91-9876543210' },
  { address: 'sector 136', mail: 'xys@geeksforgeeks.org' }
]

While eval() can parse the string and create an array of objects, it should be used with caution and only when the source of the string is trusted.