56-Object-create.md

How to use Object.create ?

In JavaScript, you can use the Object.create() method to create a new object with an existing object as its prototype. Here's an example:

const parent = {
  sayHello: function() {
    console.log('Hello!');
  }
};

const child = Object.create(parent);
child.sayHello(); // outputs "Hello!"

In this example, the parent object is the prototype of the child object. The sayHello() method is defined on the parent object, but it can be called on the child object because of the prototype chain.

You can also pass a second argument to Object.create() to define additional properties for the new object. For example:

const child = Object.create(parent, {
  name: { value: 'Alice' }
});

console.log(child.name); // outputs "Alice"

In JavaScript, the Object.create() method is used to create a new object with the specified prototype object and properties. Here's an example of how to use it:

// Create a prototype object
const personPrototype = {
  greet: function() {
    console.log(`Hello, my name is ${this.name}.`);
  }
};

// Create a new object with personPrototype as its prototype
const person1 = Object.create(personPrototype);

// Add properties to person1
person1.name = "John";
person1.age = 30;

// Call the greet method on person1
person1.greet(); // Output: Hello, my name is John.

In this example, we first create a personPrototype object that has a greet method. We then use Object.create() to create a new object called person1, with personPrototype as its prototype. We add some properties to person1, including name and age. Finally, we call the greet method on person1, which outputs "Hello, my name is John."