javascript面向对象之定义成员方法实例分析

<script language="javascript" type="text/javascript">
function Person(name,age){
 this.name = name;
 this.age = age;
 this.show = function(){
  document.write(this.name+"今年"+this.age+"岁");
 }
}
var p1 = new Person("王美人",24);
p1.show();
</script>

<script language="javascript" type="text/javascript">
function Person(name,age){
 this.name = name;
 this.age = age;
}
function show(){
 window.alert("hello,"+this.name);
}
var p1 = new Person("王美人",24);
p1.show1 = show;//注意，函数后面带()与不带()的区别。带括号表示将结果给p1.show1，而不带括号表示将该函数给p1.show1。
p1.show1();
</script>

p1.show1 = function show(){..................}