JS原型与对象实践-优快云博客

js 代码

/*
* prototype is an attribute in Object of javascript,by attribute pototype one attribute and function can
* contact with Object.by the way prototype attribute is working with key words 'new'
* here is an example:
*/
function MyObject(name,size){
this.name = name;
this.size = size;
}
MyObject.prototype.tellSize=function(){
alert("size of "+this.name+" is "+this.size)
}
var MyObj = new MyObject("tiddles","7.5 meters")
MyObj.tellSize();

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js 代码

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Untitled Document</title>
<script>
var myobject = {
objectId:"1",
objectname:"michael",
getObjectName:function(){
return this.objectname;
},
setObjectName:function(objname){
this.objectname = objname;
},
action_shout:function(){
alert("My name is "+this.objectname+"\nand my id is"+this.objectId);
}
}
</script>
</head>
<body>
<script>
myobject.action_shout();
myobject.setObjectName("hupeng");
myobject.action_shout();
</script>
</body>
</html>