Prototypes in JavaScript

Understand JavaScript prototypes

AdvancedAdvanced JSExample 1 of 12

prototypes.js

1function Person(name) { this.name = name; }
2Person.prototype.greet = function() { return 'Hello, ' + this.name; };
3const person = new Person('John');
4console.log(person.greet());

Output

Hello, John

What's going on

Prototypes enable object inheritance.

NextInheritance