This method returns the value of element's attribute or null if attribute has not been specified.
element.readAttribute(attribute);
<html> <head> <title>Prototype examples</title> <script type="text/javascript" src="/javascript/prototype.js"> </script> <script> function showResult(){ var str = $('tag').readAttribute('href'); alert("Value of href : " + str ); var str = $('tag').readAttribute('title'); alert("Value of title : " + str ); var str = $('tag').readAttribute('somethingelse'); alert("Value ofsomething else : " + str ); } </script> </head> <body> <p>Click the button to see the result.</p> <a id="tag" href="/tags/prototype" rel="tag" title="view related bookmarks.">Prototype</a> <br /> <br /> <input type="button" value="Show Result" onclick="showResult();"/> </body> </html>
To understand it in better way you can Try it yourself.
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