demo-basic.html
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<!DOCTYPE html>
<html>
<head>
<title>jQuery Onscreen Visibility Plugin</title>
<script type="text/javascript" src="http://code.jquery.com/jquery.min.js"></script>
<script type="text/javascript" src="http://www.teamdf.com/jquery-plugins/resources/javascripts/prettify.js"></script>
<script type="text/javascript" src="http://www.teamdf.com/jquery-plugins/resources/javascripts/docs.js"></script>
<script type="text/javascript" src="../jquery.visible.js"></script>
<link rel="stylesheet" href="http://www.teamdf.com/jquery-plugins/resources/stylesheets/prettify.css"/>
<link rel="stylesheet" href="http://www.teamdf.com/jquery-plugins/resources/stylesheets/docs.css"/>
<script type="text/javascript">
$(function(){
// Add the spans to the container element.
$('#container dt').each(function(){ $(this).append('<span></span>'); });
// Trigger the
$('#detect').on('click',function(){
// Select the detection type.
var detectPartial = $('#detect_type').val() == 'partial';
// Loop over each container, and check if it's visible.
$('#container dt').each(function(){
// Is this element visible onscreen?
var visible = $(this).visible( detectPartial );
// Set the visible status into the span.
$(this).find('span').text( visible ? 'Onscreen' : 'Offscreen' ).toggleClass('visible',visible);
});
});
});
</script>
<link rel="stylesheet" href="http://www.teamdf.com/jquery-plugins/resources/stylesheets/prettify.css" type="text/css" />
<style>
#container{ width: 75%; }
#floater{
position: fixed;
width: 22.5%;
right: 2.5%;
top: 0px;
}
dt span{ float: right; color: orange; }
dt span.visible{ color: green; }
</style>
</head>
<body>
<div id="container">
<h1>Basic Visibility Detection</h1>
<author><a href="http://www.teamdf.com/about/">Sam Sehnert</a></author>
<version>1.0.0<!-- (<a href="../docs/changelog.html">changelog</a>)--></version>
<license>© Digital Fusion 2012, <a href="http://teamdf.com/jquery-plugins/license/">MIT</a></license>
<p><a href="http://github.com/teamdf/jquery-visible/">Back to GitHub</a> or <a href="http://teamdf.com/web/jquery-element-onscreen-visibility/194/">Back to Blog Article</a></p>
<p>Basic element visibility checking. This example will print 'Onscreen' or 'Offscreen' depending on the location of the element at the time the detection was run.</p>
<code class="prettyprint lang-javascript">// Is this element visible onscreen?
var visible = $(this).visible( detectPartial );
// Set the visible status into the span.
$(this).find('span').text( visible ? 'Onscreen' : 'Offscreen' ).toggleClass('visible',visible);
</code>
<dl>
<dt>One</dt>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dt>Two</dt>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dt>Three</dt>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dt>Four</dt>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dt>Five</dt>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dt>Six</dt>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dt>Seven</dt>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dt>Eight</dt>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dt>Nine</dt>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dt>Ten</dt>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dt>Eleven</dt>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dt>Twelve</dt>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dt>Thirteen</dt>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dt>Fourteen</dt>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dt>Fifteen</dt>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dt>Sixteen</dt>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dt>Seventeen</dt>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dt>Eighteen</dt>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dt>Nineteen</dt>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
<dt>Twenty</dt>
<dd>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</dd>
</dl>
</div>
<div id="floater">
<h2>Visibility detection</h2>
<p>'Whole Element' will check if the entire element is visible on the screen.</p>
<p>'Par Element' will check if any part of the element is visible on the screen.</p>
<select name="detect_type" id="detect_type">
<option value="complete">Whole Element</option>
<option value="partial">Part Element</option>
</select>
<button name="detect" id="detect">Detect Visibility</button>
</div>
</body>
</html>