随着互联网的发展,页面交互效果越来越重要,而点击展开、收起内容就是一种很实用的效果。在前端开发中,使用jQuery可以轻松实现这一效果,接下来就让我们来学习如何实现点击显示隐藏行的效果。
实现效果
首先,我们来看一下需要实现的效果。
上图中,有一个表格,其中包含多行内容。默认情况下,每一行内容都是隐藏的,只有当我们点击相应的鼠标图标时,才会展开或收起相应的行内容。
HTML结构
首先,我们需要建立相应的HTML结构:
<table> <thead> <tr> <th>产品名称</th> <th>数量</th> <th>价格</th> </tr> </thead> <tbody> <tr> <td> 产品1 </td> <td> 50 </td> <td> $100 </td> <td> <i class="fa fa-plus-circle"></i> <i class="fa fa-minus-circle"></i> </td> </tr> <tr class="hide"> <td colspan="4"> <div class="inner"> <p>产品1介绍</p> </div> </td> </tr> <tr> <td> 产品2 </td> <td> 100 </td> <td> $200 </td> <td> <i class="fa fa-plus-circle"></i> <i class="fa fa-minus-circle"></i> </td> </tr> <tr class="hide"> <td colspan="4"> <div class="inner"> <p>产品2介绍</p> </div> </td> </tr> </tbody> </table>
我们建立了一个表格,其中包含了表头和表身,但是,我们希望表身中的内容默认是隐藏的。所以,我们需要使用CSS将其隐藏:
.hide { display: none; }
在每一行内容的最后一个单元格中,我们添加了两个图标,分别用于展开和收起相应内容。这里使用了Font Awesome提供的图标字体。
jQuery实现点击显示隐藏
接下来,就是实现思路。我们需要使用jQuery,来给相应的图标绑定点击事件,并且让其能够展开或收起相应行的内容。
$(document).ready(function(){ // 给展开图标绑定点击事件 $('.fa-plus-circle').click(function(){ var tr = $(this).parent().parent(); // 获取当前行 tr.next().show(); // 显示下一行 $(this).hide(); // 隐藏当前图标 tr.find('.fa-minus-circle').show(); // 显示收起图标 }); // 给收起图标绑定点击事件 $('.fa-minus-circle').click(function(){ var tr = $(this).parent().parent(); // 获取当前行 tr.next().hide(); // 隐藏下一行 $(this).hide(); // 隐藏当前图标 tr.find('.fa-plus-circle').show(); // 显示展开图标 }); });
我们在document ready事件中,给展开图标和收起图标分别绑定了点击事件。当点击展开图标时,我们首先获取当前行,然后通过next()方法获取下一行内容,使其显示出来,同时隐藏当前图标,显示收起图标;当点击收起图标时,我们同样获取当前行,然后通过next()方法获取下一行内容,使其隐藏起来,同时隐藏当前图标,显示展开图标。这样,就实现了点击显示和隐藏行的效果。
CSS样式
最后,为了美化展示效果,我们添加一些CSS样式:
table { border-collapse: collapse; margin: 50px auto; } th, td { border: 1px solid #ccc; padding: 10px; text-align: center; } th { background-color: #f0f0f0; } .inner { padding: 20px; } .fa { font-size: 24px; margin-right: 10px; cursor: pointer; } .fa-plus-circle { color: green; } .fa-minus-circle { color: red; }
我们设置了表格的样式,每一行以及表头都有边框线和居中的文字,表头背景色为灰色;将展开和收起图标的字体大小设为24px,并添加字体颜色。
到这里为止,我们已经实现了点击显示隐藏行效果。如果在实际开发中,遇到类似的需求,可以依照上述思路和代码进行实现,将会使页面交互效果更为美观、易用。
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