Object.create

`Object.create()` 和 `new` 是 JavaScript 中创建对象的两种不同方式。

`Object.create()` 方法创建一个新对象，并将其原型关联到指定的对象。这个方法允许在不调用构造函数的情况下创建一个对象。

`new` 操作符创建一个新对象并将其关联到构造函数的原型。它还会调用构造函数，并将新创建的对象传递给构造函数的 `this` 变量。

总的来说，`Object.create()` 更多用于原型继承，而 `new` 更多用于构造函数继承。

相关问题

object.create

Object.create() is a method in JavaScript that creates a new object with the specified prototype object and properties. It allows you to create a new object that inherits from an existing object, without the need to define a constructor function.

The syntax for Object.create() is:

Object.create(proto, [propertiesObject])

where `proto` is the prototype object to inherit from, and `propertiesObject` is an optional object that defines additional properties to be added to the newly created object.

Here's an example of using Object.create() to create a new object with a specific prototype:

const person = {
  greeting: function() {
    console.log(`Hello, my name is ${this.name}.`);
  }
};

const john = Object.create(person);
john.name = "John";
john.greeting(); // outputs "Hello, my name is John."

In this example, we create an object called `person` with a `greeting()` method. We then create a new object called `john` using `Object.create()`, and set its prototype to `person`. We then add a `name` property to `john`, and call the `greeting()` method, which accesses the `name` property using `this`.

Object.create(Book)和 Object.create(Book.prototype)有什么区别

Object.create(Book)和Object.create(Book.prototype)的区别在于创建的新对象的原型链不同。

当使用Object.create(Book)时，创建的新对象的原型是Book对象本身，它继承了Book对象的属性和方法。例如，如果Book对象有一个属性a，那么通过Object.create(Book)创建的新对象也会有属性a。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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