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

The solution for getting the href/src attribute (relative path 0 value) in IE6/7 is different from other browsers

The test code is as follows:

 
<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>

There are elements a and img (Standard document mode), the relative path is set as follows:

IE6/7: Return the full path

IE8/9/10/Firefox/Safari/Chrome/Opera: Return relative path

If you want to be consistent with other browsers in IE6/7, you can set the second parameter of getAttribute to 2. The standard getAttribute method does not define a second parameter. The magic of IE is as follows: MSDN's description of the setAttribute parameter

 
<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>