| 123456 |
- /*!
- * author:jieyou
- * see https://github.com/jieyou/lazyload
- * part of the code fork from tuupola's https://github.com/tuupola/jquery_lazyload
- */
- !function(a){"function"==typeof define&&define.amd?define(["jquery"],a):a(window.jQuery||window.Zepto)}(function(a){function i(){}function j(a,b){var e;return e=b._$container==d?("innerHeight"in c?c.innerHeight:d.height())+d.scrollTop():b._$container.offset().top+b._$container.height(),e<=a.offset().top-b.threshold}function k(b,e){var f;return f=e._$container==d?d.width()+(a.fn.scrollLeft?d.scrollLeft():c.pageXOffset):e._$container.offset().left+e._$container.width(),f<=b.offset().left-e.threshold}function l(a,b){var c;return c=b._$container==d?d.scrollTop():b._$container.offset().top,c>=a.offset().top+b.threshold+a.height()}function m(b,e){var f;return f=e._$container==d?a.fn.scrollLeft?d.scrollLeft():c.pageXOffset:e._$container.offset().left,f>=b.offset().left+e.threshold+b.width()}function n(a,b){var c=0;a.each(function(d){function g(){f.trigger("_lazyload_appear"),c=0}var f=a.eq(d);if(!b.skip_invisible||f.width()||f.height()||"none"===f.css("display"))if(b.vertical_only)if(l(f,b));else if(j(f,b)){if(++c>b.failure_limit)return!1}else g();else if(l(f,b)||m(f,b));else if(j(f,b)||k(f,b)){if(++c>b.failure_limit)return!1}else g()})}function o(a){return a.filter(function(b){return!a.eq(b)._lazyload_loadStarted})}var h,c=window,d=a(c),e={threshold:0,failure_limit:0,event:"scroll",effect:"show",effect_params:null,container:c,data_attribute:"original",data_srcset_attribute:"original-srcset",skip_invisible:!0,appear:i,load:i,vertical_only:!1,minimum_interval:300,use_minimum_interval_in_ios:!1,url_rewriter_fn:i,no_fake_img_loader:!1,placeholder_data_img:"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB/AAffA0nNPuCLAAAAAElFTkSuQmCC",placeholder_real_img:"http://ditu.baidu.cn/yyfm/lazyload/0.0.1/img/placeholder.png"},f=/(?:iphone|ipod|ipad).*os/gi.test(navigator.appVersion),g=f&&/(?:iphone|ipod|ipad).*os 5/gi.test(navigator.appVersion);h=function(){var a=Object.prototype.toString;return function(b){return a.call(b).replace("[object ","").replace("]","")}}(),a.fn.hasOwnProperty("lazyload")||(a.fn.lazyload=function(b){var k,l,p,j=this,m=null;return a.isPlainObject(b)||(b={}),a.each(e,function(f,g){-1!=a.inArray(f,["threshold","failure_limit","minimum_interval"])?b[f]="String"==h(b[f])?parseInt(b[f],10):g:"container"==f?(b._$container=b.hasOwnProperty(f)?b[f]==c||b[f]==document?d:a(b[f]):d,delete b.container):!e.hasOwnProperty(f)||b.hasOwnProperty(f)&&h(b[f])==h(e[f])||(b[f]=g)}),k="scroll"==b.event,l=k||"scrollstart"==b.event||"scrollstop"==b.event,j.each(function(c){var e=this,f=j.eq(c),g=f.attr("src"),h=f.attr("data-"+b.data_attribute),k=b.url_rewriter_fn==i?h:b.url_rewriter_fn.call(e,f,h),m=f.attr("data-"+b.data_srcset_attribute),n=f.is("img");return 1==f._lazyload_loadStarted||g==k?(f._lazyload_loadStarted=!0,j=o(j),void 0):(f._lazyload_loadStarted=!1,n&&!g&&f.one("error",function(){f.attr("src",b.placeholder_real_img)}).attr("src",b.placeholder_data_img),f.one("_lazyload_appear",function(){function g(){d&&f.hide(),n?(m&&f.attr("srcset",m),k&&f.attr("src",k)):f.css("background-image",'url("'+k+'")'),d&&f[b.effect].apply(f,c?b.effect_params:[]),j=o(j)}var d,c=a.isArray(b.effect_params);f._lazyload_loadStarted||(d="show"!=b.effect&&a.fn[b.effect]&&(!b.effect_params||c&&0==b.effect_params.length),b.appear!=i&&b.appear.call(e,j.length,b),f._lazyload_loadStarted=!0,b.no_fake_img_loader||m?(b.load!=i&&f.one("load",function(){b.load.call(e,j.length,b)}),g()):a("<img />").one("load",function(){g(),b.load!=i&&b.load.call(e,j.length,b)}).attr("src",k))}),l||f.on(b.event,function(){f._lazyload_loadStarted||f.trigger("_lazyload_appear")}),void 0)}),l&&(p=0!=b.minimum_interval,b._$container.on(b.event,function(){return!k||!p||f&&!b.use_minimum_interval_in_ios?n(j,b):(m||(m=setTimeout(function(){n(j,b),m=null},b.minimum_interval)),void 0)})),d.on("resize load",function(){n(j,b)}),g&&d.on("pageshow",function(a){a.originalEvent&&a.originalEvent.persisted&&j.trigger("_lazyload_appear")}),a(function(){n(j,b)}),this})});
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