GetAttribute in IE6/7 obtains the href/src attribute (the relative path 0 value is different from other browsers_javascript skills

 
<a href="/abc/index.html">home</a> 
<img src="http://files.jb51.net/upload/201108/20110828174815833.gif"> 
<script> 
var link = document.getElementsByTagName(&#39;a&#39;)[0]; 
var img = document.getElementsByTagName(&#39;img&#39;)[0]; 
alert(link.getAttribute(&#39;href&#39;)); 
alert(img.getAttribute(&#39;src&#39;)) 
</script>

 
<a href="/abc/index.html">home</a> 
<img src="http://files.jb51.net/upload/201108/20110828174815833.gif"> 
<script> 
var link = document.getElementsByTagName(&#39;a&#39;)[0]; 
var img = document.getElementsByTagName(&#39;img&#39;)[0]; 
alert(link.getAttribute(&#39;href&#39;, 2)); // 注意第二个参数 
alert(img.getAttribute(&#39;src&#39;, 2)); // // 注意第二个参数 
</script>