我想使用collapse data-parent options。我需要传统的手风琴行为：当显示可折叠项目时，应关闭指定父级下的所有可折叠元素。但它不起作用。我不知道这是因为我的嵌套崩溃还是我做错了。
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<div class="content-nav">
<a data-parent="#content-articles" role="button" data-toggle="collapse" aria-expanded="false" aria-controls="content-nav__book_third" href="#content-nav__book_third" class="content-nav__book content-nav__book_third">3</a>
<a data-parent="#content-articles" role="button" data-toggle="collapse" aria-expanded="false" aria-controls="content-nav__book_second" href="#content-nav__book_second" class="content-nav__book content-nav__book_second">2</a>
<a data-parent="#content-articles" role="button" data-toggle="collapse" aria-expanded="true" aria-controls="content-nav__book_first" href="#content-nav__book_first" class="content-nav__book content-nav__book_first">1</a>
</div>
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<div id="content-articles">
<div id="content-nav__book_third" class="content-article collapse">
<div id="content-article__info_third-1" class="content-article__info collapse">
Book 3 article 1
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<div id="content-article__info_third-2" class="content-article__info collapse">
Book 3 article 2
</div>
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<div id="content-article__info_third-3" class="content-article__info collapse">
Book 3 article 3
</div>
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<div class="content-article__plan">
<a data-parent="#content-nav__book_third" data-toggle="collapse" aria-expanded="false" aria-controls="content-article__info_third-1" href="#content-article__info_third-1" class="content-article__plan-link content-article__plan-link_third-1">Link - Book 3 article 1</a>
<a data-parent="#content-nav__book_third" data-toggle="collapse" aria-expanded="false" aria-controls="content-article__info_third-2" href="#content-article__info_third-2" class="content-article__plan-link content-article__plan-link_third-2">Link - Book 3 article 2</a>
<a data-parent="#content-nav__book_third" data-toggle="collapse" aria-expanded="false" aria-controls="content-article__info_third-3" href="#content-article__info_third-3" class="content-article__plan-link content-article__plan-link_third-3">Link - Book 3 article 3</a>
</div>
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</div>
<!--.content-article-->
<div id="content-nav__book_second" class="content-article collapse">
<div id="content-article__info_second-1" class="content-article__info collapse">
Book 2 article 1
</div>
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<div id="content-article__info_second-2" class="content-article__info collapse">
Book 2 article 2
</div>
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<div id="content-article__info_second-3" class="content-article__info collapse">
Book 2 article 3
</div>
<!--.content-article__info-->
<div class="content-article__plan">
<a data-parent="#content-nav__book_second" data-toggle="collapse" aria-expanded="false" aria-controls="content-article__info_second-1" href="#content-article__info_second-1" class="content-article__plan-link content-article__plan-link_second-1">Link - Book 2 article 1</a>
<a data-parent="#content-nav__book_second" data-toggle="collapse" aria-expanded="false" aria-controls="content-article__info_second-2" href="#content-article__info_second-2" class="content-article__plan-link content-article__plan-link_second-2">Link - Book 2 article 2</a>
<a data-parent="#content-nav__book_second" data-toggle="collapse" aria-expanded="false" aria-controls="content-article__info_second-3" href="#content-article__info_second-3" class="content-article__plan-link content-article__plan-link_second-3">Link - Book 2 article 3</a>
</div>
<!--.content-article__plan-->
</div>
<!--.content-article-->
<div id="content-nav__book_first" class="content-article collapse show">
<div id="content-article__info_first-1" class="content-article__info collapse">
Book 1 article 1
</div>
<!--.content-article__info-->
<div id="content-article__info_first-2" class="content-article__info collapse">
Book 1 article 2
</div>
<!--.content-article__info-->
<div id="content-article__info_first-3" class="content-article__info collapse">
Book 1 article 3
</div>
<!--.content-article__info-->
<div class="content-article__plan">
<a data-parent="#content-nav__book_first" data-toggle="collapse" aria-expanded="false" aria-controls="content-article__info_first-1" href="#content-article__info_first-1" class="content-article__plan-link content-article__plan-link_first-1">Link - Book 1 article 1</a>
<a data-parent="#content-nav__book_first" data-toggle="collapse" aria-expanded="false" aria-controls="content-article__info_first-2" href="#content-article__info_first-2" class="content-article__plan-link content-article__plan-link_first-2">Link - Book 1 article 2</a>
<a data-parent="#content-nav__book_first" data-toggle="collapse" aria-expanded="false" aria-controls="content-article__info_first-3" href="#content-article__info_first-3" class="content-article__plan-link content-article__plan-link_first-3">Link - Book 1 article 3</a>
</div>
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</div>
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</div>
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可能我不得不添加一些js。但代码不应该是多余的。
答案 0 :(得分：2)
它不起作用，因为data-parent属性应该是可折叠的（.collapse）元素，而不是data-toggle（触发器）元素......
https://www.codeply.com/go/akODjGJZjE
<div class="container">
<div class="content-nav">
<a role="button" data-toggle="collapse" aria-expanded="false" aria-controls="content-nav__book_third" href="#content-nav__book_third" class="content-nav__book content-nav__book_third">3</a>
<a role="button" data-toggle="collapse" aria-expanded="false" aria-controls="content-nav__book_second" href="#content-nav__book_second" class="content-nav__book content-nav__book_second">2</a>
<a role="button" data-toggle="collapse" aria-expanded="true" aria-controls="content-nav__book_first" href="#content-nav__book_first" class="content-nav__book content-nav__book_first">1</a>
</div>
<!--.content-nav-->
<div id="content-articles">
<div id="content-nav__book_third" data-parent="#content-articles" class="content-article collapse">
<div id="content-article__info_third-1" data-parent="#content-nav__book_third" class="content-article__info collapse">
Book 3 article 1
</div>
<!--.content-article__info-->
<div id="content-article__info_third-2" data-parent="#content-nav__book_third" class="content-article__info collapse">
Book 3 article 2
</div>
<!--.content-article__info-->
<div id="content-article__info_third-3" data-parent="#content-nav__book_third" class="content-article__info collapse">
Book 3 article 3
</div>
<!--.content-article__info-->
<div class="content-article__plan">
<a data-toggle="collapse" aria-expanded="false" aria-controls="content-article__info_third-1" href="#content-article__info_third-1" class="content-article__plan-link content-article__plan-link_third-1">Link - Book 3 article 1</a>
<a data-toggle="collapse" aria-expanded="false" aria-controls="content-article__info_third-2" href="#content-article__info_third-2" class="content-article__plan-link content-article__plan-link_third-2">Link - Book 3 article 2</a>
<a data-toggle="collapse" aria-expanded="false" aria-controls="content-article__info_third-3" href="#content-article__info_third-3" class="content-article__plan-link content-article__plan-link_third-3">Link - Book 3 article 3</a>
</div>
<!--.content-article__plan-->
</div>
<!--.content-article-->
<div id="content-nav__book_second" data-parent="#content-articles" class="content-article collapse">
<div id="content-article__info_second-1" data-parent="#content-nav__book_second" class="content-article__info collapse">
Book 2 article 1
</div>
<!--.content-article__info-->
<div id="content-article__info_second-2" data-parent="#content-nav__book_second" class="content-article__info collapse">
Book 2 article 2
</div>
<!--.content-article__info-->
<div id="content-article__info_second-3" data-parent="#content-nav__book_second" class="content-article__info collapse">
Book 2 article 3
</div>
<!--.content-article__info-->
<div class="content-article__plan">
<a data-toggle="collapse" aria-expanded="false" aria-controls="content-article__info_second-1" href="#content-article__info_second-1" class="content-article__plan-link content-article__plan-link_second-1">Link - Book 2 article 1</a>
<a data-toggle="collapse" aria-expanded="false" aria-controls="content-article__info_second-2" href="#content-article__info_second-2" class="content-article__plan-link content-article__plan-link_second-2">Link - Book 2 article 2</a>
<a data-toggle="collapse" aria-expanded="false" aria-controls="content-article__info_second-3" href="#content-article__info_second-3" class="content-article__plan-link content-article__plan-link_second-3">Link - Book 2 article 3</a>
</div>
<!--.content-article__plan-->
</div>
<!--.content-article-->
<div id="content-nav__book_first" data-parent="#content-articles" class="content-article collapse show">
<div id="content-article__info_first-1" data-parent="#content-nav__book_first" class="content-article__info collapse">
Book 1 article 1
</div>
<!--.content-article__info-->
<div id="content-article__info_first-2" data-parent="#content-nav__book_first" class="content-article__info collapse">
Book 1 article 2
</div>
<!--.content-article__info-->
<div id="content-article__info_first-3" data-parent="#content-nav__book_first" class="content-article__info collapse">
Book 1 article 3
</div>
<!--.content-article__info-->
<div class="content-article__plan">
<a data-toggle="collapse" aria-expanded="false" aria-controls="content-article__info_first-1" href="#content-article__info_first-1" class="content-article__plan-link content-article__plan-link_first-1">Link - Book 1 article 1</a>
<a data-toggle="collapse" aria-expanded="false" aria-controls="content-article__info_first-2" href="#content-article__info_first-2" class="content-article__plan-link content-article__plan-link_first-2">Link - Book 1 article 2</a>
<a data-toggle="collapse" aria-expanded="false" aria-controls="content-article__info_first-3" href="#content-article__info_first-3" class="content-article__plan-link content-article__plan-link_first-3">Link - Book 1 article 3</a>
</div>
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</div>
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</div>
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</div>