Question

我有一个我想要实现的身体系统功能。当用户将鼠标悬停在身体部位上时，它会突出显示该特定身体部位的信息。我按照我想要的方式对CSS进行了编码，但我对JavaScript 一无所知，以便在单击正文部分或鼠标离开悬停状态时获取信息。

我搜索了论坛，发现了类似的问题，花了好几个小时试图从别人的javascript解决方案中解决这个问题 - 我正处于需要帮助的地步。

这是我用我想要的效果制作的flash原型：

http://inwavemedia.com/temp/proto/Main.html

如果你想看看我现在拥有的东西，这是实时HTML：

http://inwavemedia.com/temp/excretory.html

这是我的代码：

<style type="text/css">
#bodysystem-excretory {
 width: 618px;
 height: 504px;
 background: url(excretory.png) no-repeat;
 margin: 10px auto; padding: 0;
 position: relative;
 border: 1px solid #999;
}
#bodysystem-excretory li {
    margin: 0;
    padding: 0;
    list-style: none;
    display: block;
    position: absolute;
}

#bodysystem-excretory a {
    display: block;
/*  text-indent: -9999px;*/
    text-decoration: none;
}

#esoph {
    left: 85px;
    top: 41px;
    width: 46px;
    height: 94px;
    z-index: 10;
}

#lungs {
    left: 76px;
    top: 84px;
    width: 84px;
    height: 68px;
    z-index: 20;
}

#bladder {
    left: 87px;
    top: 148px;
    width: 64px;
    height: 104px;
    z-index: 30;
}

#esoph a {
    height: 94px;
}

#lungs a {
    height: 67px;
}

#bladder a {
    height: 104px;
}


#esoph a:hover {
    background-image: url(excretory.png);
    background-repeat: no-repeat;
    background-position: -25px -561px;
}

#lungs a:hover {
    background-image: url(excretory.png);
    background-repeat: no-repeat;
    background-position: -105px -523px;
}

#bladder a:hover {
    background-image: url(excretory.png);
    background-repeat: no-repeat;
    background-position: -114px -618px;
}

.info span{ 
    display: none

}

.info{
    position:relative;
    z-index:1124;
    color:#000;
}

.info:hover{
    z-index:1125;

}

.info:hover span{
    display:block;
    position:absolute;
    top:-30px;
    left:155px;
    width:370px;
    color:#000;
    background-color:#FFFFFF;
}
</style>

</head>

<body>
<ul id="bodysystem-excretory">
  <li id="esoph">
    <a href="#" class="info"><span id="esoph-info"><h3>Esophagus</h3><p>This is esophagus information. This is esophagus information. This is esophagus information. This is esophagus information. This is esophagus information. This is esophagus information. This is esophagus information. </p></span></a>
  </li>
<li id="lungs"><a href="#" class="info"><span id="lungs-info"><h3>Lungs</h3></span></a></li>
<li id="bladder"><a href="#" class="info"><span id="bladder-info"><h3>Bladder</h3></span></a></li>
</ul>

Answer 1

以下是您需要做的所需更改：

<head>
    <title>Untitled Page</title>
    <style type="text/css">
        #bodysystem-excretory
        {
            width: 618px;
            height: 504px;
            background: url(excretory.png) no-repeat;
            margin: 10px auto;
            padding: 0;
            position: relative;
            border: 1px solid #999;
        }
        #bodysystem-excretory li
        {
            margin: 0;
            padding: 0;
            list-style: none;
            display: block;
            position: absolute;
        }

        #bodysystem-excretory a
        {
            display: block; /*  text-indent: -9999px;*/
            text-decoration: none;
        }

        #esoph
        {
            left: 85px;
            top: 41px;
            width: 46px;
            height: 94px;
            z-index: 10;
        }

        #lungs
        {
            left: 76px;
            top: 84px;
            width: 84px;
            height: 68px;
            z-index: 20;
        }

        #bladder
        {
            left: 87px;
            top: 148px;
            width: 64px;
            height: 104px;
            z-index: 30;
        }

        #esoph a
        {
            height: 94px;
        }

        #lungs a
        {
            height: 67px;
        }

        #bladder a
        {
            height: 104px;
        }


        #esoph a:hover
        {
            background-image: url(excretory.png);
            background-repeat: no-repeat;
            background-position: -25px -561px;
        }

        #lungs a:hover
        {
            background-image: url(excretory.png);
            background-repeat: no-repeat;
            background-position: -105px -523px;
        }

        #bladder a:hover
        {
            background-image: url(excretory.png);
            background-repeat: no-repeat;
            background-position: -114px -618px;
        }

        .info span
        {
            display: none;
        }

        .info
        {
            position: relative;
            z-index: 1000;
            color: #000;
        }

        #bodysystem-excretory li[selected='true'] .info
        {
            z-index:1200;
        }

        #bodysystem-excretory li[selected='true'] .info span
        {
            display: block;
            position: absolute;
            top: -30px;
            left: 155px;
            width: 370px;
            color: #000;
            background-color: #FFFFFF;
        }

        .info:hover
        {
            z-index: 1125;
        }

        .info:hover span
        {
            display: block;
            position: absolute;
            top: -30px;
            left: 155px;
            width: 370px;
            color: #000;
            background-color: #FFFFFF;
        }
    </style>
    <script type="text/javascript">
        function SelectOrgan(obj)
        {
            var parentObj = obj.parentNode;
            var organs = document.getElementById("bodysystem-excretory").getElementsByTagName("li");

            for (var i = 0, len = organs.length; i < len; i++)
            {
                organs[i].setAttribute("selected", "false");
            }

            parentObj.setAttribute("selected", "true");
        }
    </script>
</head>
<body>
    <ul id="bodysystem-excretory">
        <li id="esoph" selected="false"><a href="#" class="info" onclick="SelectOrgan(this)"><span id="esoph-info">
            <h3>
                Esophagus</h3>
            <p>
                This is esophagus information. This is esophagus information. This is esophagus
                information. This is esophagus information. This is esophagus information. This
                is esophagus information. This is esophagus information.
            </p>
        </span></a></li>
        <li id="lungs" selected="false"><a href="#" class="info" onclick="SelectOrgan(this)"><span id="lungs-info">
            <h3>
                Lungs</h3>
        </span></a></li>
        <li id="bladder" selected="false"><a href="#" class="info" onclick="SelectOrgan(this)"><span id="bladder-info">
            <h3>
                Bladder</h3>
        </span></a></li>
    </ul>
</body>
</html>

请注意，每个器官都被分配了一个绝对位置，在该空间中具有不同的位置。如果你保持所有这些都具有相同的左，顶部，宽度和高度，那么你将达到你所需要的。

Answer 2

我认为以前的答案都不符合您的要求。这是my suggestion。请注意，CSS会被更改，并且最后会添加javascript。

<html>
<head><style type="text/css">
#bodysystem-excretory {
     width: 618px; height: 504px;
     background: url("excretory.png") no-repeat;
     margin: 10px auto; padding: 0;
     position: relative;
     border: 1px solid #999;
}
#bodysystem-excretory li {
    margin: 0; padding: 0;
    list-style: none;
    display: block;
    position: absolute;
}
#bodysystem-excretory a {
    display: block;
    /*  text-indent: -9999px;*/
    text-decoration: none;
}
#esoph {
    left: 85px; top: 41px;
    width: 46px; height: 94px;
    z-index: 10;
}
#lungs {
    left: 76px; top: 84px;
    width: 84px; height: 68px;
    z-index: 20;
}
#bladder {
    left: 87px; top: 148px;
    width: 64px; height: 104px;
    z-index: 30;
}
#esoph a {
    height: 94px;
}
#lungs a {
    height: 67px;
}
#bladder a {
    height: 104px;
}
#esoph:hover, #esoph.selected {
    background-image: url("excretory.png") no-repeat -25px -561px;
}
#lungs:hover, #lungs.selected {
    background-image: url("excretory.png") no-repeat -105px -523px;
}
#bladder:hover, #bladder.selected {
    background-image: url("excretory.png") no-repeat -114px -618px;
}
.info span{ 
    display: none
}
.info{
    position:relative;
    z-index:1124;
    color:#000;
}
.selected .info{
    z-index:1125;
}
.selected .info span {
    display:block; position:absolute;
    top:-30px; left:155px;
    width:370px;
    color:#000; background-color:#FFFFFF;
}</style></head>
<body>
<ul id="bodysystem-excretory">
<li id="esoph">
<a href="#" class="info">
<span id="esoph-info"><h3>Esophagus</h3>
<p>
This is esophagus information. This is esophagus information. 
This is esophagus information. This is esophagus information.
This is esophagus information. This is esophagus information.
This is esophagus information. </p></span></a>
</li>
<li id="lungs"><a href="#" class="info">
<span id="lungs-info"><h3>Lungs</h3></span></a>        
</li>
<li id="bladder"><a href="#" class="info">
<span id="bladder-info"><h3>Bladder</h3>
</span></a></li>
</ul><script type="text/javascript">
// Get the <li> elements as a list called 'parts'
var parts = 
    document.getElementById('bodysystem-excretory').getElementsByTagName('li');
function getClickFunction(part) {
    return function() {
// This is the function that will be called when one of the <li>s is clicked
        if (part.className == 'selected') {    // if the body part is already selected
            part.className = '';               // ... then deselect it
        }
        else {                                 // otherwise,
            // first deselect all of the body parts
            for (var i = 0; i < parts.length; i++) {
                parts[i].className = '';
            }
            // then select the one that's been clicked
            part.className = 'selected';
        }
    }
}
// Now, attach this function to all of the <li> elements representing body parts      
for (var i = 0; i < parts.length; i++) {
    parts[i].onclick = getClickFunction(parts[i]);
}
</script></body></html>

Answer 3

您可以添加一个点击事件，查看我们点击的内容，然后在点击时永久更改样式。然后，这将永久地“揭示”新部件。

您的HTML：

<li id="lungs" onclick="highlight(this.id)">
   <!--some stuff-->
</li>

在javascript中（为了简单起见，我已将其添加到<script>标记中，只需将此+您的其他案例添加到您的标题中）：

 <script> 
   function highlight(id) {
       var part = document.getElementById(id);
       switch(id){
          case "lungs":
             part.style.backgroundImage="url(excretory.png)";
             part.style.backgroundRepeat="no-repeat";
             part.style.backgroundPosition="-105px 523px";
             break;
          //rinse repeat for all cases, don't forget the : after your case and to add break; at the end of each line
          default:
             //do nothing, or something, whatever
    }
 </script>

您可以详细了解javascript切换语句here。

Answer 4

我认为最优雅的方法是为每个器官提供两个背景图像，[organ].png和[organ]_hover.png。然后通过对所有器官应用相同的类来创建一个悬停事件（如.organ）;

此时，您可以使用JQuery的.css()函数更改特定器官的背景（在使用$(this).attr("id")获取后），方法是添加_hover后缀。

您还应保留当前器官的记录，因此每当用户将鼠标悬停在新器官上时，您将之前器官的背景更改回[organ].png，然后将新器官保存为当前器官。

至于信息，只需使用您已提取的器官名称display:block;，以及之前的display:none;

编辑：这是展示核心功能的fiddle

HTML：

   <div id="human_body">
            <div class="organ" id="lungs"></div>
            <div class="organ" id="liver"></div>
            <div class="organ" id="pancreas"></div>
            <div class="organ" id="heart"></div>
            <div class="organ" id="kidneys"></div>
        </div>        
        <div id="info">
            <div id="lungs_info">
                Lungs
            </div>
            <div id="pancreas_info">
                Pancreas
            </div>
            <div id="liver_info">
                Liver
            </div>
            <div id="heart_info">
                Heart
            </div>
            <div id="kidneys_info">
                Kidneys
            </div>
        </div>

CSS：

.organ {
width:40px;
    height:40px;
    margin:10px;
}

#lungs {
        background:url("http://www.fishweb.co.il/organs/lungs.png");
    }
    #heart {
        background:url("http://www.fishweb.co.il/organs/heart.png");
    }
    #pancreas {
        background:url("http://www.fishweb.co.il/organs/pancreas.png");
    }
    #kidneys {
        background:url("http://www.fishweb.co.il/organs/kidneys.png");
    }
    #liver {
        background:url("http://www.fishweb.co.il/organs/liver.png");
}

#info>div {
display:none;
}

JS（JQuery）：

var current='';
$(".organ").mouseover(
 function(){
     if (current!='') {
         $("#" + current).css("background","url(http://www.fishweb.co.il/organs/" + current +".png)"); // remove the highlight from the prev organ
         $("#" + current + "_info").hide();
     }
     current = $(this).attr("id");
     $(this).css("background","url(http://www.fishweb.co.il/organs/" + current +"_hover.png)"); // highlight the current organ
     $("#" + current + "_info").show();
 }
    );

Answer 5

您需要在链接和容器上创建一组简单的标识符，这些标识符彼此对应。

JSFiddle： http://jsfiddle.net/Y4Wtn

<style>
    .btn {font-weight:normal}
    .btn.active {font-weight:bold;}
    .pane {display:none;border:1px #ccc solid;padding:10px;}
    .pane.active {display:block;}
</style>
<script>
// insert jquery here
$(document).read(function(){

    $('.btn').click(function(){
        // grab the rel value of the the link that was clicked
        var thisRel = $(this).attr('rel');
        // remove active class from all .btn
        $('.btn').removeClass('active');
        // add active class to link that was clicked
        $(this).addClass('active');
        // remove all active classes from .pane
        $('.pane').removeClass('active');
        // add class active to pane with the same rel value clicked link
        $('.pane[rel="'+thisRel+'"]').addClass('active');         
    });

});
</script>
<ul>
    <li><a href="#1" class="btn active" rel="1">Item One</a></li>
    <li><a href="#2" class="btn" rel="2">Item Two</a></li>
    <li><a href="#3" class="btn" rel="3">Item Three</a></li>
</ul>

<div class="pane active" rel="1">Pane One</div>
<div class="pane" rel="2">Pane Two</div>
<div class="pane" rel="3">Pane Three</div>

当您单击或停止使用Javascript进行鼠标悬停时，如何使CSS on-hover内容保持不变？

5 个答案: