[OK]を使用することができますあなたがアンカートリガーとメニュー自体の間の隙間に乗っているときに壊れないようにしてください。
だから私は同じ私のスクリプトを保持だけで、デスクトップの幅にそれを発射してからホバーギャップを削除するには、私のCSSを調整しました。
最終解決:https://codepen.io/JacobLett/pen/jaaQYG
HTML
<nav class="navbar navbar-expand-lg navbar-dark bg-primary">
<a class="navbar-brand" href="#">Mega Dropdown</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">
<a class="nav-link" href="#">Category</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Category 1
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdown">
<div class="container">
<div class="row">
<div class="col-md-4">
<ul class="nav flex-column">
<li class="nav-item">
<a class="nav-link active" href="#">Active</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link item</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link item</a>
</li>
</ul>
</div>
<!-- /.col-md-4 -->
<div class="col-md-4">
<ul class="nav flex-column">
<li class="nav-item">
<a class="nav-link active" href="#">Active</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link item</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link item</a>
</li>
</ul>
</div>
<!-- /.col-md-4 -->
<div class="col-md-4">
<a href="">
<img src="https://dummyimage.com/200x100/ccc/000&text=image+link" alt="" class="img-fluid">
</a>
<p class="text-white">Short image call to action</p>
</div>
<!-- /.col-md-4 -->
</div>
</div>
<!-- /.container -->
</div>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Category 2
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdown">
<div class="container">
<div class="row">
<div class="col-md-4">
<ul class="nav flex-column">
<li class="nav-item">
<a class="nav-link active" href="#">Active</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link item</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link item</a>
</li>
</ul>
</div>
<!-- /.col-md-4 -->
<div class="col-md-4">
<ul class="nav flex-column">
<li class="nav-item">
<a class="nav-link active" href="#">Active</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link item</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link item</a>
</li>
</ul>
</div>
<!-- /.col-md-4 -->
<div class="col-md-4">
<a href="">
<img src="https://dummyimage.com/200x100/ccc/000&text=image+link" alt="" class="img-fluid">
</a>
<p class="text-white">Short image call to action</p>
</div>
<!-- /.col-md-4 -->
</div>
</div>
<!-- /.container -->
</div>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Category 3
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdown">
<div class="container">
<div class="row">
<div class="col-md-4">
<ul class="nav flex-column">
<li class="nav-item">
<a class="nav-link active" href="#">Active</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link item</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link item</a>
</li>
</ul>
</div>
<!-- /.col-md-4 -->
<div class="col-md-4">
<ul class="nav flex-column">
<li class="nav-item">
<a class="nav-link active" href="#">Active</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link item</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link item</a>
</li>
</ul>
</div>
<!-- /.col-md-4 -->
<div class="col-md-4">
<a href="">
<img src="https://dummyimage.com/200x100/ccc/000&text=image+link" alt="" class="img-fluid">
</a>
<p class="text-white">Short image call to action</p>
</div>
<!-- /.col-md-4 -->
</div>
</div>
<!-- /.container -->
</div>
</li>
</ul>
<form class="form-inline my-2 my-lg-0">
<input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
<button class="btn btn-outline-light my-2 my-sm-0" type="submit">Search</button>
</form>
</div>
</nav>
CSS
/* adds some margin below the link sets */
.navbar .dropdown-menu div[class*="col"] {
margin-bottom:1rem;
}
.navbar .dropdown-menu {
border:none;
background-color:#0060c8!important;
}
/* breakpoint and up - mega dropdown styles */
@media screen and (min-width: 992px) {
/* remove the padding from the navbar so the dropdown hover state is not broken */
.navbar {
padding-top:0px;
padding-bottom:0px;
}
/* remove the padding from the nav-item and add some margin to give some breathing room on hovers */
.navbar .nav-item {
padding:.5rem .5rem;
margin:0 .25rem;
}
/* makes the dropdown full width */
.navbar .dropdown {position:static;}
.navbar .dropdown-menu {
width:100%;
left:0;
right:0;
/* height of nav-item */
top:45px;
}
/* shows the dropdown menu on hover */
.navbar .dropdown:hover .dropdown-menu, .navbar .dropdown .dropdown-menu:hover {
display:block!important;
}
.navbar .dropdown-menu {
border: 1px solid rgba(0,0,0,.15);
background-color: #fff;
}
}
JS
$(document).ready(function() {
// executes when HTML-Document is loaded and DOM is ready
// breakpoint and up
$(window).resize(function(){
if ($(window).width() >= 980){
// when you hover a toggle show its dropdown menu
$(".navbar .dropdown-toggle").hover(function() {
$(this).parent().toggleClass("show");
$(this).parent().find(".dropdown-menu").toggleClass("show");
});
// hide the menu when the mouse leaves the dropdown
$(".navbar .dropdown-menu").mouseleave(function() {
$(this).removeClass("show");
});
// do something here
}
});
// document ready
});
重複したシナリオが重複しない場合:https://stackoverflow.com/questions/42183672/bootstrap-v4-navbar-dropdown-hover – isherwood