如何使用上一个和下一个按钮遍历带有嵌套下拉菜单的Bootstrap选项卡式导航菜单？
[英]How do I traverse a Bootstrap tabbed navigation menu with nested dropdown using prev and next button?
问题描述
我有一个带有嵌套下拉菜单的选项卡式导航的模板。 上一个和下一个按钮应提供每个选项卡的辅助导航。 这些按钮将一直起作用，直到需要浏览下拉菜单中的页面为止。 如果使用“下一步”按钮前进到讲座，则下拉菜单中的所有页面/讲座都将显示在按钮下方。
我不确定在js中编写if / else片段的最佳方法。 不知道根据我目前为止的情况还是从头开始研究是否更好。 我需要帮助弄清楚如何使脚本在用于导航的整个列表中前进和后退。
$('.btnNext').click(function () {
$('.nav-tabs > .nav-item > .active').parent().next('li').find('a').trigger('click');
});
$('.btnPrevious').click(function () {
$('.nav-tabs > .nav-item > .active').parent().prev('li').find('a').trigger('click');
});
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/css/bootstrap.min.css" integrity="sha384-GJzZqFGwb1QTTN6wy59ffF1BuGJpLSa9DkKMp0DgiMDm4iYMj70gZWKYbI706tWS" crossorigin="anonymous">
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.0/css/all.css" integrity="sha384-lZN37f5QGtY3VHgisS14W3ExzMWZxybE1SJSEsQp9S+oqd12jhcu+A56Ebc1zFSJ" crossorigin="anonymous">
<script src="https://code.jquery.com/jquery-3.3.1.min.js" integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8=" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.6/umd/popper.min.js" integrity="sha384-wHAiFfRlMFy6i5SRaxvfOCifBUQy1xHdJ/yoi7FRNXMRBu5WHdZYu1hA6ZOblgut" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/js/bootstrap.min.js" integrity="sha384-B0UglyR+jN6CkvvICOB2joaf5I4l3gm9GU6Hc1og6Ls7i6U/mkkaduKaBhlAXv9k" crossorigin="anonymous"></script>
<body>
<nav role="navigation">
<ul class="nav nav-tabs" role="tablist">
<li class="nav-item">
<a class="nav-link active" id="tab1" data-toggle="tab" href="#page1" role="tab" >Welcome</a></li>
<li class="nav-item">
<a href="#page2" id="tab2" data-toggle="tab" role="tab" class="nav-link">Activities</a></li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" data-toggle="dropdown" href="#" role="button" aria-haspopup="true" aria-expanded="false">Lectures</a>
<div class="dropdown-menu">
<a class="dropdown-item" data-toggle="tab" role="tab" id="tab3" href="#page3">Lecture 1</a>
<a class="dropdown-item" data-toggle="tab" role="tab" id="tab4" href="#page4">Lecture 2</a>
<a class="dropdown-item" data-toggle="tab" role="tab" id="tab5" href="#page5">Lecture 3</a>
</div>
</li>
</ul>
</nav>
<div class="tab-content" id="myTabContent">
<div class="tab-pane fade show active" id="page1" role="tabpanel" aria-labelledby="overview-tab">
<h2>Overview</h2>
<p>Page 1. </p>
<div>
<a type="button" class="btn btn-primary btnNext nextRight">Next <em class="fas fa-chevron-right"></em></a>
</div>
</div>
<div class="tab-pane fade" id="page2" role="tabpanel" aria-labelledby="activities-tab">
<h2>Activities</h2>
Page 2.
<div class="alert alert-info fade in">
<a href="#" class="close" data-dismiss="alert" aria-label="close">×</a>
<p class="text-center">If you have questions regarding any of these activities, make sure to post those questions in the <strong>Open Forum</strong>.</p>
</div>
<div>
<a type="button" class="btn btn-primary btnNext nextRight">Next <em class="fas fa-chevron-right"></em></a>
<a type="button" class="btn btn-primary btnPrevious"> <em class="fas fa-chevron-left"></em> Previous</a>
</div>
</div>
<div class="tab-pane fade" id="page3" role="tabpanel" aria-labelledby="page3-tab">
<h2>Lecture 1</h2>
<p>Page 3.</p>
<div>
<a type="button" class="btn btn-primary btnNext nextRight">Next <em class="fas fa-chevron-right"></em></a>
<a type="button" class="btn btn-primary btnPrevious"> <em class="fas fa-chevron-left"></em> Previous</a>
</div>
</div>
<div class="tab-pane fade" id="page4" role="tabpanel" aria-labelledby="page4-tab">
<h2>Lecture 2</h2>
<p>Page 4. </p>
<div>
<a type="button" class="btn btn-primary btnNext nextRight">Next <em class="fas fa-chevron-right"></em></a>
<a type="button" class="btn btn-primary btnPrevious"> <em class="fas fa-chevron-left"></em> Previous</a>
</div>
</div>
<div class="tab-pane fade" id="page5" role="tabpanel" aria-labelledby="page5-tab">
<h2>Lecture 3</h2>
<p>Page 5. </p>
<div>
<a type="button" class="btn btn-primary btnPrevious"><em class="fas fa-chevron-left"></em> Previous</a>
</div>
</div>
</div>
</body>
1 个解决方案
解决方案1
0 已采纳 2019-07-20 07:25:32
这是一个使用tab('show')代替trigger('click')的工作演示
$('.btnNext').click(function() { if (!$('[data-toggle="tab"].active').next('[data-toggle="tab"]').first().tab('show').length) $('[data-toggle="tab"].active').parents('li').nextAll().find('[data-toggle="tab"]').first().tab('show') }); $('.btnPrevious').click(function() { if (!$('[data-toggle="tab"].active').prev('[data-toggle="tab"]').first().tab('show').length) $('[data-toggle="tab"].active').parents('li').prevAll().find('[data-toggle="tab"]').last().tab('show') });
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/css/bootstrap.min.css" integrity="sha384-GJzZqFGwb1QTTN6wy59ffF1BuGJpLSa9DkKMp0DgiMDm4iYMj70gZWKYbI706tWS" crossorigin="anonymous"> <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.0/css/all.css" integrity="sha384-lZN37f5QGtY3VHgisS14W3ExzMWZxybE1SJSEsQp9S+oqd12jhcu+A56Ebc1zFSJ" crossorigin="anonymous"> <script src="https://code.jquery.com/jquery-3.3.1.min.js" integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8=" crossorigin="anonymous"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.6/umd/popper.min.js" integrity="sha384-wHAiFfRlMFy6i5SRaxvfOCifBUQy1xHdJ/yoi7FRNXMRBu5WHdZYu1hA6ZOblgut" crossorigin="anonymous"></script> <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/js/bootstrap.min.js" integrity="sha384-B0UglyR+jN6CkvvICOB2joaf5I4l3gm9GU6Hc1og6Ls7i6U/mkkaduKaBhlAXv9k" crossorigin="anonymous"></script> <nav role="navigation"> <ul class="nav nav-tabs" role="tablist"> <li class="nav-item"> <a class="nav-link active" id="tab1" data-toggle="tab" href="#page1" role="tab">Welcome</a></li> <li class="nav-item"> <a href="#page2" id="tab2" data-toggle="tab" role="tab" class="nav-link">Activities</a></li> <li class="nav-item dropdown"> <a class="nav-link dropdown-toggle" data-toggle="dropdown" href="#" role="button" aria-haspopup="true" aria-expanded="false">Lectures</a> <div class="dropdown-menu"> <a class="dropdown-item" data-toggle="tab" role="tab" id="tab3" href="#page3">Lecture 1</a> <a class="dropdown-item" data-toggle="tab" role="tab" id="tab4" href="#page4">Lecture 2</a> <a class="dropdown-item" data-toggle="tab" role="tab" id="tab5" href="#page5">Lecture 3</a> </div> </li> </ul> </nav> <div class="tab-content" id="myTabContent"> <div class="tab-pane fade show active" id="page1" role="tabpanel" aria-labelledby="overview-tab"> <h2>Overview</h2> <p>Page 1. </p> <div> <a type="button" class="btn btn-primary btnNext nextRight">Next <em class="fas fa-chevron-right"></em></a> </div> </div> <div class="tab-pane fade" id="page2" role="tabpanel" aria-labelledby="activities-tab"> <h2>Activities</h2> Page 2. <div class="alert alert-info fade in"> <a href="#" class="close" data-dismiss="alert" aria-label="close">×</a> </div> <div> <a type="button" class="btn btn-primary btnNext nextRight">Next <em class="fas fa-chevron-right"></em></a> <a type="button" class="btn btn-primary btnPrevious"> <em class="fas fa-chevron-left"></em> Previous</a> </div> </div> <div class="tab-pane fade" id="page3" role="tabpanel" aria-labelledby="page3-tab"> <h2>Lecture 1</h2> <p>Page 3.</p> <div> <a type="button" class="btn btn-primary btnNext nextRight">Next <em class="fas fa-chevron-right"></em></a> <a type="button" class="btn btn-primary btnPrevious"> <em class="fas fa-chevron-left"></em> Previous</a> </div> </div> <div class="tab-pane fade" id="page4" role="tabpanel" aria-labelledby="page4-tab"> <h2>Lecture 2</h2> <p>Page 4. </p> <div> <a type="button" class="btn btn-primary btnNext nextRight">Next <em class="fas fa-chevron-right"></em></a> <a type="button" class="btn btn-primary btnPrevious"> <em class="fas fa-chevron-left"></em> Previous</a> </div> </div> <div class="tab-pane fade" id="page5" role="tabpanel" aria-labelledby="page5-tab"> <h2>Lecture 3</h2> <p>Page 5. </p> <div> <a type="button" class="btn btn-primary btnPrevious"><em class="fas fa-chevron-left"></em> Previous</a> </div> </div> </div>
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