js中方法继承

function Teacher(name,age){
      Person.call(this,name,age);
    }
    function Person(name,age){
      this.name = name;
      this.age = age;
    }
    Person.prototype.getName = function(){
      console.log(this.name);
    }
    Teacher.prototype = Person.prototype;
    Teacher1.prototype.constructor = Person;
    //Teacher.prototype = new Person();
    var t = new Teacher('enco',18);
    console.log(t.name);
  //console.log(Person.prototype);
  //console.log(t.prototype);
    t.getName()

call 和 apply

• JS中的call()和apply()方法