ImagesLazyLoad 图片延迟加载效果
http://www.cnblogs.com/cloudgamer/archive/2010/03/03/ImagesLazyLoad.html
Lazyload 延迟加载效果
http://www.cnblogs.com/cloudgamer/archive/2010/02/01/LazyLoad.html
- 非首屏内容的延迟加载
function loadSecondaryScreen(elem, callback) { var $window = $(window); var elemTop = elem.offset().top; var viewportH = $window.height(); var loaded = 0; if (elemTop > viewportH) { $window.bind('scroll', function() { if (loaded == 0) { loaded = 1; $window.unbind('scroll'); callback(); } }); } else { callback(); } }