jQuery UI Draggable - Events
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<!doctype html>
<html lang="en">
<head>
<title>jQuery UI Draggable - Events</title>
<link type="text/css" href="js/themes/base/ui.all.css" rel="stylesheet" />
<script type="text/javascript" src="js/jquery-1.3.2.js"></script>
<script type="text/javascript" src="js/ui/ui.core.js"></script>
<script type="text/javascript" src="js/ui/ui.draggable.js"></script>
<link type="text/css" href="js/demos.css" rel="stylesheet" />
<style type="text/css">
#draggable { width: 16em; padding: 0 1em; }
#draggable ul li { margin: 1em 0; padding: 0.5em 0; } * html #draggable ul li { height: 1%; }
#draggable ul li span.ui-icon { float: left; }
#draggable ul li span.count { font-weight: bold; }
</style>
<script type="text/javascript">
$(function() {
var $start_counter = $('#event-start'), $drag_counter = $('#event-drag'), $stop_counter = $('#event-stop');
var counts = [0,0,0];
$("#draggable").draggable({
start: function() {
counts[0]++;
updateCounterStatus($start_counter,counts[0]);
},
drag: function() {
counts[1]++;
updateCounterStatus($drag_counter,counts[1]);
},
stop: function() {
counts[2]++;
updateCounterStatus($stop_counter,counts[2]);
}
});
});
function updateCounterStatus($event_counter,new_count) {
// first update the status visually...
if (!$event_counter.hasClass('ui-state-hover')) {
$event_counter.addClass('ui-state-hover')
.siblings().removeClass('ui-state-hover');
}
// ...then update the numbers
$('span.count',$event_counter).text(new_count);
}
</script>
</head>
<body>
<div class="demo">
<div id="draggable" class="ui-widget ui-widget-content">
<p>Drag me to trigger the chain of events.</p>
<ul class="ui-helper-reset">
<li id="event-start" class="ui-state-default ui-corner-all"><span class="ui-icon ui-icon-play"></span>"start" invoked <span class="count">0</span>x</li>
<li id="event-drag" class="ui-state-default ui-corner-all"><span class="ui-icon ui-icon-arrow-4"></span>"drag" invoked <span class="count">0</span>x</li>
<li id="event-stop" class="ui-state-default ui-corner-all"><span class="ui-icon ui-icon-stop"></span>"stop" invoked <span class="count">0</span>x</li>
</ul>
</div>
</div><!-- End demo -->
<div class="demo-description">
<p>
Layer functionality onto the draggable using the <code>start</code>, <code>drag</code>, and <code>stop</code> events. Start is fired at the start of the drag; drag during the drag; and stop when dragging stops.
</p>
</div><!-- End demo-description -->
</body>
</html>
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