enable narrator to read dynamic alerts added due to important changes in content.
When navigating through the form, an error message appears if the user fails to type validated data. When this happens the screen reader should notify the user of the error thrown.
We tried to reproduce your situation, however the URL given in your message requires a customer login. Thus we cannot reproduce your issue. Is there a page or a way to get past the login issue so we may assist you?
The Microsoft Disability Answer Desk team.
Cricket Wireless commented
Our goal is to have the error message for the previously validated field spoken, when there's an error. For example, if you navigate to https://www.cricketwireless.com/activate.html and click the "activate" button, both fields should throw an error and the last error before the activate button should be read. In this case "Enter your 10-digit phone number."
We are using the aria features for dynamic alerts, as described https://developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA/ARIA_Techniques/Using_the_alert_role
An example of our inserted code is provided below:
<label class="field-error-container" aria-live="assertive" role="alert" aria-relevant="all"><strong>Enter your 10-digit phone number.</strong></label>
Test Devices: Nokia Lumia 630 and Nokia Lumia 920
Please let me know if this useful or whether additional information is required.