HTML5 wai-aria-compliant ember <dialog> component
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Use the new <dialog> element to create accessible, HTML5-first dialogs

(misspelled on purpose)

You probably shouldn't use modals, but for times where an error occurs, and needs immediate attention, accessible solutions can vary in mileage. Often times, we append role="alert" or role="alertdialog", but this only solves the first of problems. Other problems often include:

  • Refocusing the previously-interacted-with element which caused the modal in the first place when the modal is dismissed.
  • Preventing interaction with all elements in the <body> besides the modal itself
  • Dismissing the modal when the foreground of the application is clicked/tapped
  • Focusing the modal content when it appears

ember-dialogue does all this out-of-the-box, with little effort, using the new HTML5 <dialog> element.


  • git clone this repository
  • npm install
  • bower install


Simply use the {{alert-message}} component.

Note: for optimal accessibility, you should always specify a title, and description.

The component can be used in both block form ({{#alert-message}}[content here]{{/alert-message}}), or non-block form ({{alert-message}}); if you use the former and provide a title or description, they will appear inside the <dialog> element. Otherwise, it's your responsibility to provide content in block form for the <dialog>.

Basic Usage

{{alert-message title="Authentication Failed" description="We could not match your username and password with an existing user."}}

Customized Dismiss Button

Via the dismissText property:

{{alert-message dismissText="OK, I Understand" title="Session Timeout" description="You have been idle for over 25 minutes, and your session has timed out.  Please re-authenticate"}}

Customized Dismiss Action

Use closure actions:

{{alert-message onDismiss=(action "checkLogin") title="" description=""}}

Customized Template

Override the component's template by adding alert-message.hbs to app/templates/components/, and customize to your liking.

Using <form>s within blocks

Placing a <form> wthin a <dialog> element is actually a best-practice. Using this technique, alongside HTML5 autofocus, we can allow the <form> to naturally gain focus:

{{#alert-message title="Please Re-authenticate" description="You must re-validate your session, as a time-out has occurred"}}
	<form method="dialog">
		<label for="email">Email</label>
		{{input type="email" value=userEmail required=true autofocus=true id="email"}}
		<label for="password">Password</label>
		{{input type="password" id="password" value=userPassword required=true}}
			<button type="submit">Re-Authenticate</button>

Notice the attribute on the <form>, where we set method="dialog"; this prevents the form from submitting, and dismisses the dialog once the form validates.


Running Tests

  • npm test (Runs ember try:testall to test your addon against multiple Ember versions)
  • ember test
  • ember test --server


  • ember build

For more information on using ember-cli, visit