如何在Javascript中使用函数创建对象？

function Person(name, age) {
  this.name = name;
  this.age = age;
}

Person.prototype.sayHello = function() {
  console.log("Hello, my name is " + this.name);
};

var person1 = new Person("John", 25);
var person2 = new Person("Jane", 30);

console.log(person1.name);  // 输出: "John"
console.log(person2.age);   // 输出: 30

person1.sayHello();         // 输出: "Hello, my name is John"
person2.sayHello();         // 输出: "Hello, my name is Jane"