<html> <head> <script type="text/javascript"> function whichElement(e) { var targ if (!e) var e = window.event if (e.target) targ = e.target else if (e.srcElement) targ = e.srcElement if (targ.nodeType == 3) // defeat Safari bug targ = targ.parentNode var tname tname=targ.tagName alert("You clicked on a " + tname + " element.") } </script> </head> <body onmouseup="whichElement(event)"> <p>Click somewhere in the document. An alert box will alert the tag name of the element you clicked on. 在文档中任意位置点击，提示框将会告诉你所点击元素的标签名称</p> <h3>This is a header这是标题</h3> <p>This is a paragraph</p> <img border="0" src="ball16.gif" width="29" height="28" alt="Ball"> </body> </html>
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