I want the tag name in the alert box.

I want the tag name in the alert box.

Suppose I have a structure as below:

<div>
      <span>hello span</span>
      <p>
            This is the paragraph
     </p>
</div>


Now I want is that when clicked on the paragraph it will alert  as "paragraph". If clicked on the div it will alert as "div". Means I want the tagname in the alert box.

Please help.