structure Struct in JavaScript - ECMAScript 2021

Unfortunately, JavaScript (ECMAScript) does not have a built-in struct data type like other programming languages such as C++, Python, or Swift. However, we can create an object that behaves like a struct by following some conventions. Here’s an example:

const Person = {
  firstName: '',
  lastName: '',
  age: 0,
  email: '',
  social: {
    twitter: '',
    facebook: '',
    instagram: '',
  },
};

In this example, we are defining an object named Person that contains some properties such as firstName, lastName, age, email, and social. We could use this Person object to represent a contact in an address book application, where we need to store multiple pieces of information about each person.

To set values for these Person properties, we can assign them like this:

const john = {
  firstName: 'John',
  lastName: 'Doe',
  age: 30,
  email: 'john.doe@example.com',
  social: {
    twitter: '@john_doe',
    facebook: '/john.doe',
    instagram: '/john_doe',
  },
};

Now, we can access the properties of the john object like this:

console.log(john.firstName); // Output: John
console.log(john.social.instagram); // Output: /john_doe

While this approach isn’t a true struct, it provides a similar way to define and organize related data in JavaScript. This style of programming is commonly referred to as object-based programming.