Having trouble wrapping my head around the prototype concept

While reading an educational article, I stumbled upon a code snippet that explained the concept of prototypes in JavaScript. The code demonstrates how the prototype chain works by creating a Date object and logging its prototypes.

The code snippet initializes a Date object called myDate, then navigates up the prototype chain to show that the prototype of myDate is a Date.prototype object, and the prototype of that is Object.prototype.

const myDate = new Date();
let object = myDate;

do {  
  object = Object.getPrototypeOf(object);
  console.log(object);

} while (object);

Answer №1

Understanding this concept is actually quite simple:

let currentDate = new Date();   // Initialize a Date object.
let obj = currentDate;

do {  
  obj = Object.getPrototypeOf(obj); // Retrieve the prototype of the object.
  console.log(obj);                 // Display in the console.
} while (obj);             // Continue this process for all prototypes.
                             // until there are no more to find.

By following this chain, we discover that an object’s prototype also has its own prototype. This is what the snippet is referring to.

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