khsbory.github.io/aria-modal.html at master · khsbory/khsbory.github.io · GitHub

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<!doctype html>
<html lang="en-US">
<head>
<meta charset="UTF-8">
<title>Accessible Modal Dialog</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<script src="https://code.jquery.com/jquery.js"></script>
<link rel="stylesheet" href="https://code.jquery.com/mobile/1.4.5/jquery.mobile-1.4.5.min.css" />
<script>
$(document).ready(function(e) {
	$('#trigger-modal').click(function() {

		//var lastFocus = document.activeElement; wont' work on iOS
		var modalOverlay = $('<div>').attr({id:"modalOverlay", id:"modalOverlay"});
		$(modalOverlay).appendTo('body');
		$("#trigger-modal").attr('disabled','true');
		var dialog = $('<div>').attr("aria-modal", "true");
		$(dialog).html('<div id="firstElement" tabindex="0"></div><h1 id="dialog-heading">Account Login</h1><div id="dialog-description"><p>Enter your Username and Password below to sign in to your account. Click the Join button to create a new account.</p></div><form><label>Username <input id="username" type="text"></label><br><label>Password <input type="password"></label></form><button id="firstButton">Sign In</button><button>Join</button><button id="lastButton" aria-label="Close Account Login Dialog">X</button><div id="lastElement" tabindex="0"></div>').appendTo('body');
		$('#username').focus();

$('#lastElement').focusin(function(e) {
	   $('#username').focus();
});
$('#firstElement').focusin(function(e) {
	   $('#lastButton').focus();
});

	$('body').on('keyup', function(e) {
		if(e.keyCode == '27'){

			$(modalOverlay).remove();
			$(dialog).remove();
	    	$("#trigger-modal").removeAttr('disabled').focus();//works on iOS
		}
	});

$('[aria-modal=true] button').click(function(e) {

		$(modalOverlay).remove();
		$(dialog).remove();
        //lastFocus.focus(); not working on iOS
	    $("#trigger-modal").removeAttr('disabled').focus();//works on iOS

});
		return false;
	});

});
</script>
<style type="text/css">
*:focus {outline:3px solid blue;}
#modalOverlay {
	width:100%;
	height:100%;
	z-index:2;
	background-color:#000;
	opacity:0.5;
	position:fixed;
	top:0;
	left:0;
	margin:0;
	padding:0;
}
[role=dialog] {
	width:50%;
	margin-left:auto;
	margin-right:auto;
	padding: 5px;
	border: thin #000 solid;
	background-color:#fff;
	z-index:3;
	position:fixed;
	top:25%;
	left:25%;
}
.scroll-frame {
    overflow: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling:touch;
	height:400px;
	width:100%;
}
#lastButton {
 position:absolute;
top: 0px;
right: 0px;
}
</style>
</head>

<body>
<main>
<h1>Accessible Modal Dialog</h1>
<p>Coding instructions: <a href="http://w3c.github.io/aria-practices/#dialog_modal">http://w3c.github.io/aria-practices/#dialog_modal</a></p>
<h2>WAI-ARIA role=dialog</h2>
<button id="trigger-modal" aria-haspopup="dialog">Trigger modal dialog</button>
</main>
</body>
</html>