jQuery - draggable images on iPad / iPhone - how to integrate event.preventDefault();?
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Tim
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Published on 2010-12-20T10:08:16Z
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2010/12/21
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Hello!
I use jQuery, jQuery UI and jQuery mobile to build a web application for iPhone / iPad. Now I create images and they should be draggable, so I did this:
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-type" content="text/html; charset=utf-8">
<title>Drag - Test</title>
<link rel="stylesheet" href="http://code.jquery.com/mobile/1.0a2/jquery.mobile-1.0a2.min.css" />
<script src="http://code.jquery.com/jquery-1.4.4.min.js"></script>
<script src="http://code.jquery.com/mobile/1.0a2/jquery.mobile-1.0a2.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.8.7/jquery-ui.min.js"></script>
</head>
<body>
<div>
<div style="width:500px;height:500px;border:1px solid red;">
<img src="http://upload.wikimedia.org/wikipedia/en/thumb/9/9e/JQuery_logo.svg/200px-JQuery_logo.svg.png" class="draggable" alt="jQuery logo" />
<img src="http://upload.wikimedia.org/wikipedia/en/a/ab/Apple-logo.png" class="draggable" alt="Apple Inc. logo" />
</div>
</div>
</body>
<script type="text/javascript">
$(document).ready(function() {
$(".draggable").draggable();
});
</script>
</html>
Here you can see the live example: http://jsbin.com/igena4/
The problem is, that the whole page want to scroll. I searched in Apple's HTML5 examples and found this to prevent the scrolling of the page, so that the image is draggable:
...
onDragStart: function(event) {
// stop page from panning on iPhone/iPad - we're moving a note, not the page
event.preventDefault();
...
}
But the problem is for me, how can I include this into my jQuery? Where do I get event?
Best Regards.
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