Object-Oriented JavaScript — Prototypes, Call, and Apply

Object-Oriented JavaScript — Prototypes, Call, and Apply

JavaScript is partly an object-oriented language. To learn JavaScript, we got to learn the object-oriented parts of JavaScript. In this article, we’ll look at prototypes, call , and apply .

JavaScript is partly an object-oriented language.

To learn JavaScript, we got to learn the object-oriented parts of JavaScript.

In this article, we’ll look at prototypes, call , and apply .

Function Prototypes

Functions have a special prototype property that has items that are shared between all instances of the constructor function.

For instance, we can write:

function F() {}

F.prototype = {
  name: 'james',
  say() {
    return `I am ${this.nam}`;
  }
};

Then if we create 2 instances of F :

const foo = new F();
const bar = new F();
console.log(foo, bar);

We see that both foo and bar have the same properties.

The say method also does the same thing.

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