Search notes:
DOM example: stopPropagation
<!DOCTYPE html>
<html>
<head>
<meta content="text/html;charset=utf-8" http-equiv="Content-Type">
<title>stopPropagation()</title>
<style type="text/css">
#A , #B , #C {margin: 20px; border: 1px solid black}
</style>
<script type="text/javascript">
function clicked(e, elem) {
var out = document.getElementById('out');
out.innerHTML += 'clicked ' + elem.id + '<br>'
if (document.getElementById('stop').checked) {
e.stopPropagation();
}
}
</script>
</head>
<body>
<div id='A' onclick="clicked(event, this);">
<div id='B' onclick="clicked(event, this);">
<div id='C' onclick="clicked(event, this);">
click me
</div>
</div>
</div>
<p><input id='stop' type='checkbox'> <code>stopPropagation</code></p>
<div id='out'>
</div>
</body>
</html>