script/xmlevents/script-observer-1.xhtml

<html xmlns="http://www.w3.org/1999/xhtml"
    xmlns:ev="http://www.w3.org/2001/xml-events"
    xml:lang="en">
<head>
<title>observer ~ &lt;script ev:observer=""&gt;</title>
</head>
<body>
<h1><var>observer</var> ~ <code>&lt;script ev:observer=""&gt;</code></h1>

<p>Is a <code>&lt;script ev:event="" ev:observer=""&gt;</code>
executed during loading the document?
<em id="executed">FAIL</em></p>

<p>Is a <code>&lt;script ev:event="" ev:observer=""&gt;</code>
executed when <button id="button">an event is dispatched</button>?
<em id="invoked">not yet</em></p>

<script type="text/javascript">
window.Loading = true;
document.getElementById ('executed').textContent = 'No';
</script>

<script type="text/javascript" ev:event="click" ev:observer="button">
if (window.Loading) {
  document.getElementById ('executed').textContent = 'Yes';
} else {
  document.getElementById ('invoked').textContent = 'PASS';
}
</script>

<script type="text/javascript">
window.Loading = false;
</script>

</body>
</html>
1	<html xmlns="http://www.w3.org/1999/xhtml"
2	xmlns:ev="http://www.w3.org/2001/xml-events"
3	xml:lang="en">
4	<head>
5	<title>observer ~ <script ev:observer=""></title>
6	</head>
7	<body>
8	<h1><var>observer</var> ~ <code><script ev:observer=""></code></h1>
9
10	<p>Is a <code><script ev:event="" ev:observer=""></code>
11	executed during loading the document?
12	<em id="executed">FAIL</em></p>
13
14	<p>Is a <code><script ev:event="" ev:observer=""></code>
15	executed when <button id="button">an event is dispatched</button>?
16	<em id="invoked">not yet</em></p>
17
18	<script type="text/javascript">
19	window.Loading = true;
20	document.getElementById ('executed').textContent = 'No';
21	</script>
22
23	<script type="text/javascript" ev:event="click" ev:observer="button">
24	if (window.Loading) {
25	document.getElementById ('executed').textContent = 'Yes';
26	} else {
27	document.getElementById ('invoked').textContent = 'PASS';
28	}
29	</script>
30
31	<script type="text/javascript">
32	window.Loading = false;
33	</script>
34
35	</body>
36	</html>