JavaScript的apply和call方法及其区别

参考资料：

http://blog.csdn.net/myhahaxiao/article/details/6952321

apply和call能“劫持”其他对象的方法来执行，其形参如下：

apply(obj, array parameters)

call(obj,  parameter1,parameter2,...)

示例：

    /*定义一个人类*/
    function Person(name,age)
    {
        this.name=name;
        this.age=age;
    }
    /*定义一个学生类*/
    function Student1(name,age,grade)
    {
        Person.apply(this,arguments);
        this.grade=grade;
    }
    /*定义另一个学生类*/
     function Student2(name,age,grade)
    {
        Person.call(this,name,age);
        this.grade=grade;
    }
    //创建一个学生类
    var student1=new Student1("zhangsan",8,"一年级");
    var student2=new Student2("wangwu",9,"二年级");
    
　　console.log("name:"+student1.name+"\n"+"age:"+student1.age+"\n"+"grade:"+student1.grade);
　　console.log("name:"+student2.name+"\n"+"age:"+student2.age+"\n"+"grade:"+student2.grade);