你好我正在使用bootstrap 4＆amp;我已成功将导航标签添加到下拉列表中。当我点击选项卡时，下拉列表正在隐藏。我试过this，虽然，我无法取得结果。当我点击下拉列表中的选项卡时，如何防止下拉隐藏。请帮我。提前谢谢。
<!DOCTYPE html>
<html lang="en">
<head>
<title>Bootstrap Example</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.0/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js"></script>
<link rel="stylesheet" type="text/css" href="fontawesome-5.0.9/web-fonts-with-css/css/fontawesome-all.min.css">
</head>
<body>
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<a class="navbar-brand" href="#">Navbar</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav mr-auto">
<li class="nav-item dropdown">
<a href="#" class="nav-link dropdown-toggle" data-toggle="dropdown">Link<span class="sr-only">(current)</span></a>
<div class="dropdown-menu dropdown-menu-left dropdown-menu-tip-ne recent-projects" aria-labelledby="navbarDropdown" style="width:350px">
<nav>
<div class="nav nav-tabs" id="nav-tab" role="tablist">
<a class="nav-item nav-link active" id="nav-home-tab" data-toggle="tab" href="#nav-home" role="tab" aria-controls="nav-home" aria-selected="true">Home</a>
<a class="nav-item nav-link" id="nav-profile-tab" data-toggle="tab" href="#nav-profile" role="tab" aria-controls="nav-profile" aria-selected="false">Profile</a>
<a class="nav-item nav-link" id="nav-contact-tab" data-toggle="tab" href="#nav-contact" role="tab" aria-controls="nav-contact" aria-selected="false">Contact</a>
</div>
</nav>
<div class="tab-content" id="nav-tabContent">
<div class="tab-pane fade show active" id="nav-home" role="tabpanel" aria-labelledby="nav-home-tab">profile....</div>
<div class="tab-pane fade" id="nav-profile" role="tabpanel" aria-labelledby="nav-profile-tab">home.....</div>
<div class="tab-pane fade" id="nav-contact" role="tabpanel" aria-labelledby="nav-contact-tab">contact.....</div>
</div>
</div>
</li>
</ul>
</div>
</nav>
</body>
</html>
答案 0 :(得分：0)
最后我从this找到了解决方案。
$('.dropdown-menu').on('click', function(event) {
var events = $._data(document, 'events') || {};
events = events.click || [];
for (var i = 0; i < events.length; i++) {
if (events[i].selector) {
//Check if the clicked element matches the event selector
if ($(event.target).is(events[i].selector)) {
events[i].handler.call(event.target, event);
}
// Check if any of the clicked element parents matches the
// delegated event selector (Emulating propagation)
$(event.target).parents(events[i].selector).each(function() {
events[i].handler.call(this, event);
});
}
}
event.stopPropagation(); //Always stop propagation
});<!DOCTYPE html>
<html lang="en">
<head>
<title>Bootstrap Example</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.0/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js"></script>
<link rel="stylesheet" type="text/css" href="fontawesome-5.0.9/web-fonts-with-css/css/fontawesome-all.min.css">
</head>
<body>
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<a class="navbar-brand" href="#">Navbar</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav mr-auto">
<li class="nav-item dropdown">
<a href="#" class="nav-link dropdown-toggle" data-toggle="dropdown">Link<span class="sr-only">(current)</span></a>
<div class="dropdown-menu dropdown-menu-left dropdown-menu-tip-ne recent-projects" aria-labelledby="navbarDropdown" style="width:350px">
<nav>
<div class="nav nav-tabs" id="nav-tab" role="tablist">
<a class="nav-item nav-link active" id="nav-home-tab" data-toggle="tab" href="#nav-home" role="tab" aria-controls="nav-home" aria-selected="true">Home</a>
<a class="nav-item nav-link" id="nav-profile-tab" data-toggle="tab" href="#nav-profile" role="tab" aria-controls="nav-profile" aria-selected="false">Profile</a>
<a class="nav-item nav-link" id="nav-contact-tab" data-toggle="tab" href="#nav-contact" role="tab" aria-controls="nav-contact" aria-selected="false">Contact</a>
</div>
</nav>
<div class="tab-content" id="nav-tabContent">
<div class="tab-pane fade show active" id="nav-home" role="tabpanel" aria-labelledby="nav-home-tab">profile....</div>
<div class="tab-pane fade" id="nav-profile" role="tabpanel" aria-labelledby="nav-profile-tab">home.....</div>
<div class="tab-pane fade" id="nav-contact" role="tabpanel" aria-labelledby="nav-contact-tab">contact.....</div>
</div>
</div>
</li>
</ul>
</div>
</nav>
</body>
</html>