Base.prototype.sayhi=function(){ alert hello 

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
 <head>
  <title> D:\workspace\php\hellophp\jscripts\prop\Base_prototype_2.html </title>
  <meta charset="UTF-8">
  <meta name="Author" content="">
  <meta name="Keywords" content="">
  <meta name="Description" content="">
 </head>

 <body>
<script type="text/javascript">
function Base(){
}

var objBase1=new  Base();
//OK
Base.prototype.sayhi=function(){
alert('Hi');
};
//OK
objBase1.sayhi();

var objBase2=new  Base();

//OK
Base.prototype.sayhi=function(){
alert('Hello');
};
//OK
objBase2.sayhi();

</script>
 </body>
</html>

 

posted @ 2017-12-22 11:33  sky20080101  阅读(63)  评论(0)    收藏  举报