Object.create()重写解决兼容性问题
时间: 2023-03-26 07:01:48 浏览: 66
Object.create()是一个用于创建新对象的方法,它可以接收一个原型对象作为参数,从而创建一个新对象,并将原型对象作为新对象的原型。这个方法可以用来解决一些兼容性问题,比如在旧版本的浏览器中,可能不支持Object.create()方法,此时可以通过手动实现一个类似的方法来解决兼容性问题。
相关问题
Object.create()重写解读
Object.create() 是 JavaScript 中的一个方法,用于创建一个新对象,新对象的原型链指向传入的参数对象。具体来说,它会返回一个新对象,这个新对象的原型链指向传入的参数对象,同时可以传入一个可选的属性描述对象,用于定义新对象的属性。这个方法可以用于实现对象的继承,也可以用于创建一个纯净的对象,不继承任何属性和方法。
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`.