javascript 继承

 

function Person(name,age){ 
    this.name=name; 
    this.age=age; 
} 
Person.prototype.getName=function(){ 
    return this.name; 
} 
Person.prototype.getAge=function(){ 
    return this.age; 
} 
function Person_Lxl(name,age,school){ 
    Person.apply(this,arguments); 
    this.school=school; 
    this.info=function(){ 
        alert(this.getName()+" , "+this.getAge()+" , "+this.getSchool()); 
    } 
} 
Person_Lxl.prototype=new Person(); 
Person_Lxl.prototype.getSchool=function(){ 
    return this.school; 
} 
Person_Lxl.prototype.info=function(){ 
    alert(this.getName()+" , "+this.getAge()+" , "+this.getSchool()); 
} 
 
    var p=new Person_Lxl("lxl",25,"zh"); 
    var p1=new Person_Lxl("lhw",1,"yz"); 
alert(p.getName()+" , "+p.getAge()+" , "+p.getSchool()); 
alert(p1.getName()+" , "+p1.getAge()+" , "+p1.getSchool()); 
p.info();