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<!DOCTYPE html> | |
<html> | |
<head> | |
<meta charset="UTF-8"> | |
<title>Scroll Infinito</title> | |
<style> | |
body { | |
margin: 10px; | |
font-family: "Trebuchet MS", Helvetica, sans-serif; | |
font-size: 1.5em; | |
background: #E5F7FF; | |
} | |
ul { | |
padding: 10px; | |
list-style-type: none; | |
} | |
.hidden { | |
opacity: 0; | |
} | |
</style> | |
</head> | |
<body> | |
<ul id="list"> | |
</ul> | |
</body> | |
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script> | |
<script type="text/javascript"> | |
$(document).ready(function() { | |
var items = 0; | |
function isElementInScroll(element) { | |
var | |
windowScrollTop = $(window).scrollTop(), | |
documentHeight = windowScrollTop + $(window).height(), | |
elementTop = $(element).offset().top, | |
elementBottom = elementTop + $(element).height(); | |
return ((elementBottom <= documentHeight) && (elementTop >= windowScrollTop)); | |
} | |
function loadItems(firstTime) { | |
var html = ''; | |
for ( var i = 0; i < 50; i++ ) { | |
html += '<li' + ( !firstTime ? ' class="hidden" ' : '') + '> Item ' + ( i + items + 1) + '</li> '; | |
} | |
var $result = $('#list').append(html); | |
if (!firstTime) { | |
$('.hidden').animate({ opacity: 1 }, 1500); | |
} | |
} | |
$(this).scroll( function(evt) { | |
if ( isElementInScroll('#list li:last') ) { | |
items += 50; | |
loadItems(); | |
} | |
}); | |
loadItems(true); | |
}); | |
</script> | |
</html> |
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