jQuery实现的自动加载页面功能示例

2019-11-20 09:05:13

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来源：转载

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本文实例讲述了jQuery实现的自动加载页面功能。分享给大家供大家参考，具体如下：

demo.html：

<li style="opacity:0;-moz-opacity: 0;filter: alpha(opacity=0);"><p>---------------</p></li><li style="opacity:0;-moz-opacity: 0;filter: alpha(opacity=0);"><p>阅谁问君诵，水落清香浮</p></li><li style="opacity:0;-moz-opacity: 0;filter: alpha(opacity=0);"><p>阅谁问君诵，水落清香浮</p></li><li style="opacity:0;-moz-opacity: 0;filter: alpha(opacity=0);"><p>阅谁问君诵，水落清香浮</p></li><li style="opacity:0;-moz-opacity: 0;filter: alpha(opacity=0);"><p>阅谁问君诵，水落清香浮</p></li><li style="opacity:0;-moz-opacity: 0;filter: alpha(opacity=0);"><p>阅谁问君诵，水落清香浮</p></li><li style="opacity:0;-moz-opacity: 0;filter: alpha(opacity=0);"><p>阅谁问君诵，水落清香浮</p></li><li style="opacity:0;-moz-opacity: 0;filter: alpha(opacity=0);"><p>阅谁问君诵，水落清香浮</p></li><li style="opacity:0;-moz-opacity: 0;filter: alpha(opacity=0);"><p>阅谁问君诵，水落清香浮</p></li><li style="opacity:0;-moz-opacity: 0;filter: alpha(opacity=0);"><p>+++++++++++++++</p></li>

scrollpagination.js：

(function( $ ){ $.fn.scrollPagination = function(options) {    var opts = $.extend($.fn.scrollPagination.defaults, options);    var target = opts.scrollTarget;    if (target == null){      target = obj;    }    opts.scrollTarget = target;    return this.each(function() {     $.fn.scrollPagination.init($(this), opts);    }); }; $.fn.stopScrollPagination = function(){   return this.each(function() {    $(this).attr('scrollPagination', 'disabled');   }); }; $.fn.scrollPagination.loadContent = function(obj, opts){   var target = opts.scrollTarget;   var mayLoadContent = $(target).scrollTop()+opts.heightOffset >= $(document).height() - $(target).height();   if (mayLoadContent){     if (opts.beforeLoad != null){      opts.beforeLoad();     }     $(obj).children().attr('rel', 'loaded');     $.ajax({       type: 'POST',       url: opts.contentPage,       data: opts.contentData,       success: function(data){        $(obj).append(data);        var objectsRendered = $(obj).children('[rel!=loaded]');        if (opts.afterLoad != null){          opts.afterLoad(objectsRendered);        }       },       dataType: 'html'     });   } }; $.fn.scrollPagination.init = function(obj, opts){   var target = opts.scrollTarget;   $(obj).attr('scrollPagination', 'enabled');   $(target).scroll(function(event){    if ($(obj).attr('scrollPagination') == 'enabled'){      $.fn.scrollPagination.loadContent(obj, opts);    }    else {      event.stopPropagation();    }   });   $.fn.scrollPagination.loadContent(obj, opts); }; $.fn.scrollPagination.defaults = {     'contentPage' : null,     'contentData' : {},     'beforeLoad': null,     'afterLoad': null ,     'scrollTarget': null,     'heightOffset': 0 };})( jQuery );

index.html：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title></title><script type="text/javascript" src="js/jquery-1.10.1.min.js"></script><script type="text/javascript" src="js/scrollpagination.js"></script><script type="text/javascript">$(function(){  $('#content').scrollPagination({    'contentPage': 'demo.html', //你要搜索结果的页面    'contentData': {},//你可以通过 children().size() 知道哪里是分页    //谁该怎么滚动？在这个例子中，完整的窗口    'scrollTarget': $(window),    //在页面到达结束之前，从多少像素开始加载？    'heightOffset': 10,    //前负荷，一些功能，可能显示一个加载DIV    'beforeLoad': function(){      $('#loading').fadeIn();    },    'afterLoad': function(elementsLoaded){      //加载后，一些功能的动画结果和隐藏预载的div      $('#loading').fadeOut();      var i = 0;      $(elementsLoaded).fadeInWithDelay();      //如果超过100结果加载停止分页（仅用于测试）      if ($('#content').children().size() > 100){        $('#nomoreresults').fadeIn();        $('#content').stopScrollPagination();      }    }  });  //元件中的延迟元件的褪色代码  $.fn.fadeInWithDelay = function(){    var delay = 0;    return this.each(function(){      $(this).delay(delay).animate({opacity:1}, 200);      delay += 100;    });  };});</script></head><body><div id="demo">  <div style="height:2000px;"></div>  <ul id="content" style=" margin:0 auto; width:800px; color:#f60; background-color:eee;">    <li><p>内容开始</p></li>  </ul>  <div class="loading" id="loading">加载中</div>  <div class="loading" id="nomoreresults">结束了</div></div></body></html>

效果图如下：