<div id="xinwen_bottom" class="xinwen_bottom">							<div id="xinwen_msg_bground" class="xinwen_msg_bground"></div>							<div id="xinwen_msg" class="xinwen_msg">								<div id="xinwen_msg_left" class="xinwen_msg_left">								<a id="xinwen_desc" class="xinwen_desc">									<strong>版权法规有变</strong>								</a>								</div>								<div id="xinwen_msg_right" class="xinwen_msg_right">									<a href="#" onclick="return false"><img class="tiny_img" num=6 class="lazyload" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB/AAffA0nNPuCLAAAAAElFTkSuQmCC" data-original="pic/news/circle.jpg" onmouseover="news_tiny_selector(6)"></a>									<a href="#" onclick="return false"><img class num=5 class="lazyload" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB/AAffA0nNPuCLAAAAAElFTkSuQmCC" data-original="pic/news/circle.jpg" onmouseover="news_tiny_selector(5)"></a>									<a href="#" onclick="return false"><img class num=4 class="lazyload" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB/AAffA0nNPuCLAAAAAElFTkSuQmCC" data-original="pic/news/circle.jpg" onmouseover="news_tiny_selector(4)"></a>									<a href="#" onclick="return false"><img class num=3 class="lazyload" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB/AAffA0nNPuCLAAAAAElFTkSuQmCC" data-original="pic/news/circle.jpg" onmouseover="news_tiny_selector(3)"></a>									<a href="#" onclick="return false"><img class num=2 class="lazyload" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB/AAffA0nNPuCLAAAAAElFTkSuQmCC" data-original="pic/news/circle.jpg" onmouseover="news_tiny_selector(2)"></a>									<a href="#" onclick="return false"><img class num=1 class="lazyload" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB/AAffA0nNPuCLAAAAAElFTkSuQmCC" data-original="pic/news/circle.jpg" onmouseover="news_tiny_selector(1)"></a>								</div>							</div>						</div>

html代码如上、现准备做一个当鼠标悬停在xinwen_bottom时候画面不执行Interval,当鼠标移出xinwen_bottom时候继续执行setInterval时间进行图片轮播，之前的代码如下：

    $("div.xinwen_bottom").mouseout(function(){    	alert(1);    });

发现无限触发mouseout。

查阅后发现，mouseout不仅作用于本元素，还作用于子元素和孙元素，所以会无限触发。改用mouseleave后问题解决

    $("div.xinwen_bottom").mouseleave(function(){    	alert(1);    });

小结：mouseout作用于本元素和子元素以及孙元素。mouseleave仅作用于本元素。