<html>
<head>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
<script type="text/javascript">
$("select#choosebook").change(function(){
$(".title").slideDown("medium");
});
</head>
<body>
<div class="booktitle">
<p>
<font color="red">*</font>Book:
<select id="choosebook">
<option>Choose a Book...</option>
<option>Add new Book...</option>
</select>
<div class="title" style="display:none">**
<font color="red">*</font>Title: <input type="text">
</div>
<font color="red">*</font>Page: <input type="text" class="page">
</div>
</body>
</html>
<html>
<head>
<script type="text/javascript" sr
阅读背景：
Div在Div中即使显示:none仍然占据空间?
来源：互联网
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