关于用jQuery实现效果

flyxiang228

1、效果1：关于新闻信息文字上下切换
<div  id="scrollNews">  <ul>  <li><span class="plin">July 12,2009 4:30 pm</span>AR Update: Rolling Stones concert canceled for July 22 in Los Angeles.  </li>  <li><span class="plin">July 12,2009 4:30 pm</span>AR Update: Rolling Stones concert canceled for July 22 in Los Angeles.  </li>  </ul>  </div>
/*AR new*/$(function(){        var $this = $("#scrollNews");var scrollTimer;$this.hover(function(){  clearInterval(scrollTimer); },function(){   scrollTimer = setInterval(function(){ scrollNews( $this );}, 3000 );}).trigger("mouseleave");});function scrollNews(obj){   var $self = obj.find("ul:first");   var lineHeight = $self.find("li:first").height(); //获取行高   $self.animate({ "marginTop" : -lineHeight +"px" }, 600 , function(){         $self.css({marginTop:0}).find("li:first").appendTo($self); //appendTo能直接移动元素   })}

2、效果2：将模块展开和关闭
/*模块展开和关闭*/$(function(){ $(".module_up_down").toggle(function(){var $self = $(this);$self.prev().slideToggle(600,function(){  $("img",$self).attr("src","images/up.gif");}); },function(){var $self = $(this);$self.prev().slideToggle(600,function(){  $("img",$self).attr("src","images/down.gif");}); })})