js获取元素的属性值

 

 
  <! 
  DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" 
  >  
  
 
  < 
  html  
  xmlns 
  ="http://www.w3.org/1999/xhtml" 
  >  
  
 
  < 
  head 
  >  
  
 
  < 
  title 
  >获取元素属性 
  </ 
  title 
  >  
  
 
  </ 
  head 
  >  
  
 
  < 
  body 
  >  
  
 
  < 
  div  
  id 
  ="roboth" 
  ></ 
  div 
  >  
  
 
  <div id="test"></div>  
 

< script  type ="text/javascript" >  

 

<!--获取属性-->

var div=document.getElementById("roboth"); 
alert(div.attributes.getNamedItem("id").nodeValue); 
alert(div.attributes.item(0).nodeValue); 
alert(div.getAttributeNode("id").nodeValue); 
alert(div.getAttribute("id"));

 

<!--添加属性-->

document.getElementById("test").attachEvent("onclick",func);

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