javascript执行submit() action目标被调用两次

Problem:

找到一个问题描述和我的很类似：

 

I have two JSP page, there are one text and one button in index.jsp,when write some information in text area and press Enter Key,this page will be submit to other JSP page named cal.jsp,and in cal.jsp will print a message "receive".when I run this index.jsp,and write some information in textarea and then press Enter Key,I found this page is submit to cal.jsp,but I found that cal.jsp print two receive,like follows:
receive
receive

 

Solution:

天啊。。。搞了2个小时，原来是我之前为了避免不同浏览器的差异，用jQuery替换了很多代码，其中有一部分就是绑定按钮事件，而原来按钮上的onclick属性忘了删除，导致执行了原有onclick和jQuery绑定的onclick，变成了2次。。。