Function Borrowing
With the bind() method, an object can borrow a method from another object.
The example below creates 2 objects (person and member).
The member object borrows the fullname method from the person object :
Example
const person = {
firstName:"John",
lastName: "Doe",
fullName: function () {
return this.firstName + " " + this.lastName;
}
}
const member = {
firstName:"Hege",
lastName: "Nilsen",
}
let fullName = person.fullName.bind(member);