E-mail List Archives

Re: required field not being announced in Firefox/NVDA


From: Birkir R. Gunnarsson
Date: Oct 13, 2017 12:16PM

So based on a very quick test I think I understand what's happening
(or I have a theory).

The error messages when required fields are left blank are implemented
as alerts in Firefox (the equivalent of putting role="alert" on the
error message).
Therefore, when the message is displayed, NVDA follows the rule and
disrupts its reading of anything else on the page to announce the
In this case it is trying to read the label for the field that
received focus, but the alert overrides it.
If you copy and paste the HTMl below, save it and open it with Firefox
and NVDA, then try to submit the form leaving either field blani, you
notice that NVDA will start saying "use" (as in "username") but
stopsafter the first sound or two to read the error message (it
announces it as "alert").
Same with password, NVDA will say "pa" and then start reading the alert.

There are two possible sources of trouble here.
1. At the browser level, error messages should not be communicated as
alerts, but as polite live regions (they should be read, but after
reading other content).
NVDA, don't let lerts override the reading of form field labels.
Form field labels are usually short and should have priority over
anything else when they are announced.
<!DOCTYPE html>
<html lang="en">
<head><title>Testing HTML5 custom validation messages</title></head>
<h1>Testing HTML5 custom validation messages</h1>
<label for="un">User name</label>
<input id="un" type="text" required
oninvalid="setCustomValidity('Username required')"
<label for="pwd">Password</label>
<input id="pwd" type="password" required
oninvalid="setCustomValidity('You need to provide a password
silly!!')" oninput="setCustomValidity('')" >
<button type="submit">Submit</button>

On 10/13/17, Beranek, Nicholas via WebAIM-Forum
< <EMAIL REMOVED> > wrote:
> Hi Angela, can you show us the code in context? There’s no reason for NVDA
> and Firefox not to honor aria-required and the HTML5 required attribute.
> Nick Beranek
> Capital One
> On 10/12/17, 8:01 PM, "WebAIM-Forum on behalf of Angela French"
> < <EMAIL REMOVED> on behalf of <EMAIL REMOVED> >
> wrote:
> I have tried the following and none of them read the label of the
> required field after alerting the user to please fill in the require field.
> aria-required="true"
> required
> required=""
> required="true"
> I give up.
> Angela
> -----Original Message-----
> From: WebAIM-Forum [mailto: <EMAIL REMOVED> ] On
> Behalf Of JP Jamous
> Sent: Thursday, October 12, 2017 12:03 PM
> To: 'WebAIM Discussion List' < <EMAIL REMOVED> >
> Subject: Re: [WebAIM] required field not being announced in
> Firefox/NVDA
> Semantically, it should be required="true". Required is the short-hand
> writing for it and browsers are forgiving as we know them.
> Personally, I prefer required="true". Each HTML attribute has a value.
> Why do this one differently.
> Did you try to use aria-required="true" to see if NVDA would respond
> differently?
> Just keep in mind that NVDA was not created to function with either IE
> or edge. So having it fail with those 2 does not come as a surprise to me.
> In fact, I would consider it normal behavior.
> -----Original Message-----
> From: WebAIM-Forum [mailto: <EMAIL REMOVED> ] On
> Behalf Of Angela French
> Sent: Thursday, October 12, 2017 1:18 PM
> To: WebAim Forum ( <EMAIL REMOVED> )
> Subject: [WebAIM] required field not being announced in Firefox/NVDA
> We are using the html required element (required="true") to indicate
> required fields. The problem when testing with NVDA is that focus goes to
> the required field but doesn't read the form label so the screen reader user
> doesn't know which required field they missed. The only way to find out,
> it seems, is to go back an element in the form and then forward again so the
> label will be read. Is this a bug, or are we doing something wrong? It
> works fine in Chrome. We've given up on IE or Edge with NVDA,
> Thank you
> Angela French
> Internet/Intranet Specialist
> Washington State Board for Community and Technical Colleges
> 360-704-4316
> www.sbctc.edu<;http://www.sbctc.edu/>;
> > > at http://webaim.org/discussion/archives
> >
> > > at http://webaim.org/discussion/archives
> > > > > >
> >
> The information contained in this e-mail is confidential and/or proprietary
> to Capital One and/or its affiliates and may only be used solely in
> performance of work or services for Capital One. The information transmitted
> herewith is intended only for use by the individual or entity to which it is
> addressed. If the reader of this message is not the intended recipient, you
> are hereby notified that any review, retransmission, dissemination,
> distribution, copying or other use of, or taking of any action in reliance
> upon this information is strictly prohibited. If you have received this
> communication in error, please contact the sender and delete the material
> from your computer.
> > > > >

Work hard. Have fun. Make history.