枚举JavaScript对象的函数


答案：From: JavaEye.com 

枚举JavaScript对象的函数： 
function iterator(obj) { 
 for (var property in obj) { 
 document.writeln("<p>" + property + " : " + obj[property] + "</p>"); 
 } 
} 

一个简单示例(test.js)： 
function Employee () { 
  this.name = ""; 
  this.dept = "general"; 
} 

function Manager() { 
  this.reports = []; 
} 
Manager.prototype = new Employee(); 

function WorkerBee() { 
  this.projects = []; 
} 
WorkerBee.prototype = new Employee(); 

function SalesPerson() { 
  this.dept = "sales"; 
  this.quota = 100; 
} 
SalesPerson.prototype = new WorkerBee(); 

function Engineer() { 
  this.dept = "engineering"; 
  this.machine = ""; 
} 
Engineer.prototype = new WorkerBee(); 
Engineer.prototype.specialty = "code"; 

function iterator(obj) { 
 for (var property in obj) { 
 document.writeln("<p>" + property + " : " + obj[property] + "</p>"); 
 } 
} 

HTML页面为： 
<html> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> 
<title>JavaScript</title> 
<style type="text/css"> 
p { 
 font-size: 12px; 
 font-family: Verdana; 
 line-height: 0.5em; 
} 
</style> 
<script language="javascript" type="text/javascript" src="test.js"></script> 
</head> 
<body> 
<script type="text/javascript"> 
 engineer = new Engineer(); 
 iterator(engineer); 

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

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