如果条目不正确，如何避免函数指向另一个页面

I have a remove page where it can remove an entry from my database which is pre loaded into the option box. However, it redirects to my 'remove-module-complete.php' page when I type in any random text. I only want it to direct to the 'remove-module-complete.php' if their is that actual entry from the database. My javascript doesn't seem to be working.I have a remove page where it can remove an ent