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Javascript CSS下拉菜单的怪异行为_Javascript_Jquery_Html_Css_Drop Down Menu - Fatal编程技术网

Javascript CSS下拉菜单的怪异行为

Javascript CSS下拉菜单的怪异行为,javascript,jquery,html,css,drop-down-menu,Javascript,Jquery,Html,Css,Drop Down Menu,请看看这个。将鼠标悬停在“菜单”上,将显示下拉菜单,并暂停。现在我尝试将菜单更改为TD元素,并将图像分配给该TD元素,当鼠标悬停在该图像上时,它将更改图像并显示下拉列表。请参考以下代码: <html> <head> <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script> <style> li.li_class

请看看这个。将鼠标悬停在“菜单”上,将显示下拉菜单,并暂停。现在我尝试将菜单更改为
TD
元素,并将图像分配给该
TD
元素,当鼠标悬停在该图像上时,它将更改图像并显示下拉列表。请参考以下代码:

<html>
<head>
    <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<style>
li.li_class{
    display: block;
}

ul.dropDown{
    margin:0px;
    padding:0px;
}
#clickable_div {width:166px; background-color:#9c9c9c;display:block;}

#nav_menu{width:166px; height:auto; background-color:#CCC;z-index: 99999; display: none;position: absolute;}

#wrap{ width:166px;}
</style>
</head>

<body>
    <table>
        <tr>
            <td><img src="images/ori_12.png">
            </td>
            <td id='testable'>
                <div id='wrap'>
                    <img src="images/ori_14.png">
                    <div id="nav_menu">
                        <ul class="dropDown">
                            <li class="li_class"><img src="images/ori_12.png"></li>
                            <li class="li_class"><img src="images/ori_14.png"></li>
                            <li class="li_class"><img src="images/ori_15.png"></li>
                            <li class="li_class"><img src="images/ori_16.png"></li>
                        </ul>
                    </div>
                </div>
            </td>
        </tr>
        <tr>
            <td>
                abc
            </td>
            <td>
                def
            </td>
        </tr>
    </table>

</body>
<script>
        $('#testable img')
        .mouseenter(function () {
            this.src = this.src.replace('/ori_', '/hover_');
            $('#nav_menu').stop(true, true).slideDown();
        })
        .mouseleave(function () {
            this.src = this.src.replace('/hover_', '/ori_');
            $('#nav_menu').stop(true, true).slideUp();
        });



        $('#nav_menu li img')
        .mouseover(function () {
            this.src = this.src.replace('/ori_', '/hover_');
        })
        .mouseout(function () {
            this.src = this.src.replace('/hover_', '/ori_');
        });

    </script>
</html> 

li.li_班{
显示:块;
}
下拉列表{
边际:0px;
填充:0px;
}
#可单击分区{宽度:166px;背景色:#9c9c9c;显示:块;}
#导航菜单{宽度:166px;高度:自动;背景色:CCC;z索引:99999;显示:无;位置:绝对;}
#包裹{宽度:166px;}
abc def $(“#可测试img”) .mouseenter(函数(){ this.src=this.src.replace('/ori','/hover'); $(“#导航菜单”).stop(true,true.slideDown(); }) .mouseleave(函数(){ this.src=this.src.replace('/hover_','/ori_'); $(“#导航菜单”).stop(true,true.slideUp(); }); $(“#导航菜单li img”) .mouseover(函数(){ this.src=this.src.replace('/ori','/hover'); }) .mouseout(函数(){ this.src=this.src.replace('/hover_','/ori_'); });
当我将鼠标悬停在图像上时,图像确实会被替换,下拉菜单也会向下滑动,但是,我无法将鼠标悬停在下拉列表项上,因为下拉菜单会立即向上滑动。

试试看

 $('#testable  #wrap').mouseenter(function (e) {
     var anc = $(this).children('img').get(0);
     anc.src = anc.src.replace('/ori_', '/hover_');
     $('#nav_menu').stop(true, true).slideDown();
 }).mouseleave(function (e) {
     var anc = $(this).children('img').get(0);
     anc.src = anc.src.replace('/hover_', '/ori_');
     $('#nav_menu').stop(true, true).slideUp();
 });


鼠标悬停在图像外并悬停在菜单中时会触发鼠标出。因此,在包装器上应用悬停事件。如果此包装不合适,请创建包装菜单及其图像,并对其应用悬停效果。

再次感谢您的帮助。现在下拉
向下滑动
,但是,每个
li
元素都没有悬停更改图像效果Bravo!你又一次救了我一天!非常感谢你!