How to create a new many to many reference in Javascript?

Question

Imagine I have one user and one other user. The former would like to follow the latter, which I have designed as a many to many relashionship. How can I do it in Javascript? I need something like user.followers.append(other) .

Answer 1

In real life you use database connections for that, and you must have a backend already built. But if you're just playing with objects in JS, then you need a User class with a follow method.

function User (params) => {
  const {
    name,
    age,
    friends = []
  } = params

  this.name = name
  this.age = age
  this.friends = friends

  this.follow = (newFriend) => {
    this.friends.append(newFriend)
  }

  this.showFriends = () => {
    console.log(this.friends)
  }
}

Then you create two users.

const user = new User({
  name: "Joe",
  age: 25
})

const other = new User({
  name: "Francis",
  age: 27
})

Then you make one dude follow the other.

user.follow(other)

Then you can log the user's friends to see what's up.

user.showFriends()

Answer 2

Make user.followers as array. So that you can push the userid of the user who is trying to follow them.

Eg:

user = {'id': 'current_user_id',
        'followers' : ['user_id_1', 'user_id_2'....]
        };