myeclipse10.0 does not support onclick return Chkdata ()

I recently encountered a problem while making a JSP login page.

<%@ page language= "java" contenttype= "text/html" pageencoding= "Utf-8"%>  
When written in MyEclipse 10.0 always hint red part of the error, check no error, to the end of the original is because of the version of the problem, MyEclipse 10.0 version is very high, but not stable, does not support the return of JS script. This could be a bug. Had to go down a 8.6 version. Remember that the higher the version, the more unstable it is.
 
This article is from the "Zhao Yuqiang blog" blog, please be sure to keep this source http://zhaoyuqiang.blog.51cto.com/6328846/1105345