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Date: Thu, 20 Nov 2003 03:30:29 -0800 (PST)
From: James Mitchell <jmitchell@apache.org>
To: Struts Users Mailing List <struts-user@jakarta.apache.org>
Subject: Re: URGENT :: Disable enter key in HTML:FORM by using onKeyPress
 func tion
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On Thu, 20 Nov 2003, Chawla, Yogesh wrote:

> Hi,
>
> In normal forms, we can disable enter key by calling onKeyPress() function
> in the form tag.
> However, this is not supported in the <html:form> definition for Struts.
>
> Can anybody give a solution to this ...

Your best bet for stopping the user from submitting a form with JavaScript
is to handle it in the form tags onsubmit attribute.

Here's an example from a recent app I'm working on:

I needed a way to make sure that users entered a minimum of 3 (or some
configurable value) characters when performing a search.  The problem is
that it can be 3 characters from any combination of 3 fields.


<html:form action="/manageUsers"
  onsubmit="return doMyValidation(this)"
focus="view.registration.security.userName">


...and at the bottom of the page I do this...


<script language="JavaScript"/>
function doMyValidation(form){
	u =
form.elements['view.registration.security.userName'].value.length;
	f =
form.elements['view.registration.personal.firstName'].value.length;
	l =
form.elements['view.registration.personal.lastName'].value.length;

	if (u + f + l < <bean:message
key="validation.min.search.chars"/>){
		alert('<c:out value="${msg}"/>');
		return false;
	}
	return validateSearchForm(form);

}
</script>

<html:javascript formName="searchForm"
		dynamicJavascript="true"
		 staticJavascript="true"/>



...what that does is allow me to insert my own custom validation and, if
that passes, then the validator-generated one is run.



>
> Thanks,
>
> Yogesh Chawla
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-- 
James Mitchell
Software Developer / Struts Evangelist
http://www.struts-atlanta.org


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