<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title></title> </head> <body> <div><a href="javascript:go_a1(this)" id="a1">a1</a></div> <div><a href="" id="a1" onclick="go_a2(this)">a2</a></div> <script type="text/javascript"> function go_a1(obj) { alert("点击a1----"+obj.innerHTML);//点击a1----undefined } function go_a2(obj) { alert("点击a2----"+obj.innerHTML);//点击a2----a2 } </script> </body> </html>
原文：http://www.cnblogs.com/lm3306/p/7376624.html