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Bootstrap_Javascript_手风琴_html/css_WEB-ITnose

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Release: 2016-06-24 11:32:28
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  触发手风琴可以通过自定义的 data-toggle 属性来触发。其中data-toggle值设置为 collapse,data-target="#折叠区标识符"。

第一步,设计一个面板组合,里面有三个折叠区:

<div class="panel-group" id="myAccordion">    <div class="panel panel-accordion panel-default"></div>    <div class="panel panel-accordion panel-default"></div>    <div class="panel panel-accordion panel-default"></div></div>
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第二步:给面板添加内容,每个面板包括两个部分,第一个是面板标题 panel-heading,并且在这里面添加标题 panel-title。第二个部分是面板内容,也就是折叠区,使用 panel-collapse 样式。

<div class="panel panel-accordion panel-default">    <div class="panel-heading">        <h4 class="panel-title">标题一</h4>    </div>    <div class="panel-collapse">        <div class="panel-body">折叠区内容...</div>    </div></div>
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第三步,为了把标题和内容区捆绑在一起,可以通过锚链接的方法,把标题区域和面板区连在一起:

<div class="panel-group" id="myAccordion">    <div class="panel panel-accordion panel-default">        <div class="panel-heading">            <h4 class="panel-title"><a href="#panel1">标题一</a></h4>        </div>        <div class="panel-collapse" id="panel1">            <div class="panel-body">折叠区内容...</div>        </div>    </div>    <div class="panel panel-accordion panel-default">        <div class="panel-heading">            <h4 class="panel-title"><a href="#panel2">标题二</a></h4>        </div>        <div class="panel-collapse" id="panel2">            <div class="panel-body">折叠区内容...</div>        </div>    </div>    ......</div>
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第四步,控制面板内容区是否可视。在Bootstrap框架中,如果你想让内容区域不可视,只需要在 panel-collapse 样式上添加 collapse

    每个面板的内容区都被隐藏起来了,变成不可视,但有时候希望默认第一个面板内容是可视的,需要怎么办?其实Bootstrap作者早就为大家做了这方面的考虑,你只需要在collapse基础上再追加 in 样式.

<div class="panel panel-accordion panel-default">    <div class="panel-heading">        <h4 class="panel-title"><a href="#panel1">标题一</a></h4>    </div>    <div class="panel-collapse collapse" id="panel1">        <div class="panel-body">折叠区内容...</div>    </div></div>
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第五步,激活手风琴交互行为。要完成交互行为,需要在标题链接中自定义两个属性,一个是data-toggle,并且取值为collapse;另一个是data-target,取值为各个面板内容区的标识符,比如说ID,在这个例子分别是#panel1、#panel2和#panel3

div class="panel panel-accordion panel-default">    <div class="panel-heading">        <h4 class="panel-title"><a href="#panel1" data-toggle="collapse" data-target="#panel1">标题一</a></h4>    </div>    <div class="panel-collapse collapse in" id="panel1">        <div class="panel-body">折叠区内容...</div>    </div></div>
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  注意:在这个案例中不加入data-target="#panel1"也可以,因为前面已经有了href="#panel1",但如是button按钮作为触发器就必须使用data-target="#panel1"语句了。

第六步,定义data-parent属性,实现点击一个其中一个元素时,关闭所有的折叠区,再打开所单击的区域(如果所单击区域是展示的,则会关闭)。这个data-parent取值与手风琴面板容器的标识符相匹配,比如这个例子是指 #myAccordion:

<div class="panel-group" id="myAccordion">    <div class="panel panel-accordion panel-default">        <div class="panel-heading">            <h4 class="panel-title">                <a href="#panel1" data-toggle="collapse" data-target="#panel1" data-parent="#myAccordion">标题一</a>            </h4>        </div>...
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七 . 完整代码

<div class="panel-group" id="accordion">    <div class="panel panel-default">        <div class="panel-heading">            <h4 class="panel-title"><a data-toggle="collapse" data-parent="#accordion" href="#collapseOne">标题一</a></h4>        </div>        <div id="collapseOne" class="panel-collapse collapse in">            <div class="panel-body">标题一对应的内容</div>        </div>    </div>    <div class="panel panel-default">        <div class="panel-heading">            <h4 class="panel-title"><a data-toggle="collapse" data-parent="#accordion" href="#collapseTwo">标题二</a></h4>        </div>        <div id="collapseTwo" class="panel-collapse collapse">            <div class="panel-body">标题二对应的内容</div>        </div>    </div>    <div class="panel panel-default">        <div class="panel-heading">            <h4 class="panel-title"><a data-toggle="collapse"data-parent="#accordion"href="#collapseThree">标题三</a></h4>        </div>        <div id="collapseThree" class="panel-collapse collapse">            <div class="panel-body">标题三对应的内容</div>        </div>    </div></div>
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