JavaScript 是面向对象的吗

JavaScript是一种面向对象的编程语言。它提供了一种以对象为中心的编程风格，允许开发者通过创建对象来组织和管理代码。在JavaScript中，对象是一种数据类型，它可以存储属性和方法。通过使用这些属性和方法，开发者可以实现数据的封装和操作。

javascript
function Person(name, age) {
  this.name = name;
  this.age = age;
  
  this.greet = function() {
    console.log("Hello, my name is " + this.name + " and I'm " + this.age + " years old.");
  }
}
var john = new Person("John", 25);
john.greet(); // 输出: Hello, my name is John and I'm 25 years old.

javascript
function Student(name, age, school) {
  Person.call(this, name, age);
  this.school = school;
}
Student.prototype = Object.create(Person.prototype);
Student.prototype.constructor = Student;
var alice = new Student("Alice", 20, "ABC School");
alice.greet(); // 输出: Hello, my name is Alice and I'm 20 years old.