将html元素悬停在另一个元素上?

时间:2015-01-26 16:10:21

标签: javascript html css hover

如何将html元素放在另一个元素的前面,以便当一个特定元素悬停在新元素上时,它将出现在它的前面。 这是我的代码:

<div class="third">
        <label> Enter Password: </label>
        <input type="text" name="pword1" class="iBox" id="pword1" onmouseout="HideToolTip()" onmouseover="ShowToolTip()" onkeyup="allFunctions()" placeholder="choose a password" autocomplete="off">
        <p id="tooltipbox" style="visibility:hidden">Password must be between 8-16 characters, contain an uppercase, lowercase, number and special character</p>
    </div>

我有一个工具提示,它到目前为止工作。但是当我将鼠标悬停在textarea上方时,它会向下推动它下面的元素,以便工具提示可以放在页面上,当我移动鼠标时,可以将其移动到&#39; unhover&#39;它,元素向上定位。我想要一种方式,当我悬停时,一个消息框被带到前面,下面的所有元素都不会移动。就像你在这个页面上悬停任何链接一样,它们会弹出一个小对话框,只有在悬停时才会在页面上重新定位其他元素。

3 个答案:

答案 0 :(得分:2)

您需要指定z-indexposition属性;例如:

p#tooltipbox{
   z-index:1000;
   position:absolute;
   top:0;//move the element to the top of div.third of div.third
   left:0;//if you want to move the element to the left;
}
div.third{
   position:relative;
}

这里有更多信息 z-index property
position propery

答案 1 :(得分:1)

我为你创造了一个jsfiddle。单击以下链接查看示例: http://jsfiddle.net/xL7j4k6g/

请参阅上面的链接,但这里也是代码:

&#13;
&#13;
.fieldarea {
    position: relative;
    border: 1px solid red;
    width: 50%;
}
.fieldarea label {
    width: 35%;
    display: inline-block;
}
.fieldarea input {
    width: 50%;
    display: inline-block;
}
.tooltipbox {
    position: absolute;
    top: 0px;
    right: 0px;
    z-index: 1000;
    max-width: 200px;
    border: 1px solid gray;
    background-color: yellow;
    opacity: 0;
    transition: opacity .25s ease-in-out;
    -moz-transition: opacity .25s ease-in-out;
    -webkit-transition: opacity .25s ease-in-out;
}
.fieldarea:hover .tooltipbox {
    opacity: 1;
}
&#13;
<div class="fieldarea">
        <label for="pword1">Enter Password:</label>
        <input type="text" name="pword1" placeholder="choose a password" autocomplete="off">
        <div class="tooltipbox">Password must be between 8-16 characters, contain an uppercase, lowercase, number and special character</div>
    </div>
<div class="fieldarea">
        <label for="pword1">Enter Password:</label>
        <input type="text" name="pword1" placeholder="choose a password" autocomplete="off">
        <div class="tooltipbox">Password must be between 8-16 characters, contain an uppercase, lowercase, number and special character</div>
    </div>  
&#13;
&#13;
&#13;

(这看起来并没有#34;酷&#34;但是有效。我建议将CSS3过渡到一些不错的转换触摸 - 例如在悬停时淡入工具提示。)

谢谢, 大卫

答案 2 :(得分:0)

您可以使用绝对定位和jQuery。这不是完美的,而是一个简单的例子。

&#13;
&#13;
$(document).ready(function() {
  $('.box1').hover(function() {
    $('.box2').toggleClass('active')
  })
})
&#13;
.wrapper {
  position: relative;
  width: 100px;
  height: 100px;
  overflow: hidden;
  border: 2px solid black;
  background-color: white;
}
.box1 {
  width: 100px;
  height: 100px;
  position: absolute;
  top: 0;
  left: 0;
  background-color: blue;
}
.box2 {
  width: 100px;
  height: 100px;
  position: absolute;
  top: 0;
  left: 100;
  background-color: red;
}
.active {
  left: 0;
}
&#13;
<html>

<head>
  <link rel="stylesheet" href="style.css">
</head>

<body>
  <div class="wrapper">
    <div class="box1"></div>
    <div class="box2"></div>
  </div>
  <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
  <script src="script.js"></script>
</body>

</html>
&#13;
&#13;
&#13;

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