Cannot submit the form using button

When i changed form's action in JavaScript, and then useed a button(html:button.) to submit the form. in browser,[File not found] error 404 occured.Tomcat console reported that [cannot find file path..] if I change the button type from button to submit,it will be OK. Anybody can tell me why?

Re: Cannot submit the form using button

Because Struts doesn't just write out what you put in as the action. It looks up what you specify in your struts-config.xml file, and relates that back to something that the server and Struts really needs. If you really needed to do this (it would be better to have a dispatching style action),