<script> //组合继承：属性在构造函数内部继承，方法通过原型继承 function Person(name,age) { this.name = name; this.age = age; } Person.prototype.sayHi = function () { console.log(“你好”); } // 生成一个子类型 function Teacher(name,age,salary) { // 继承父类的属性 Person.call(this,name,age); this.salary = salary; } // 方法继承，通过原型对象继承 Teacher.prototype = new Person(); Teacher.prototype.constructor = Teacher; // 生成老师的一个实例 var t1 = new Teacher(“wang”,45,10000); console.dir(t1); console.log(t1.name); t1.sayHi(); </script>