Question

我正在制作一个带有搜索表单的标准Bootstrap 4顶部导航栏和＆＃34; profile＆＃34;下拉式菜单。唯一的问题是配置文件下拉列表应该是正确的，并且会发生的事情是下拉项目向右滚动屏幕。我是否只需要一些优先级设置来将其拉入或我在导航栏类属性中缺少某些内容？

＆＃13;

<nav class="navbar navbar-expand-lg navbar-dark bg-dark">
    <button class="navbar-toggler" type="button" data-toggle="collapse"
            data-target="#navbarTogglerDemo01" aria-controls="navbarTogglerDemo01" 
            aria-expanded="false" aria-label="Toggle navigation">
        <span class="navbar-toggler-icon"></span>
    </button>
    <a class="navbar-brand" href="#">
        <img src="http://www.bobmazzo.com/wp-content/uploads/2009/07/bobmazzoCD.jpg" width="30" height="30" >
    </a>
    <div class="collapse navbar-collapse" id="navbarTogglerDemo01">
        <ul class="navbar-nav mr-auto mt-2 mt-lg-0">
            <li class="nav-item active">
                <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
            </li>
            <li class="nav-item">
                <a class="nav-link" href="#">Patients</a>
            </li>
            <li class="nav-item">
                <a class="nav-link disabled" href="#">Reports</a>
            </li>
            
        </ul>

        <form id="searchForm" 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-success my-2 my-sm-0" type="submit">Search</button>
        </form>

        <ul class="navbar-nav ">
            <!-- PROFILE DROPDOWN - scrolling off the page to the right -->
            <li class="nav-item dropdown">
                <a href="#" class="nav-link dropdown-toggle" id="navDropDownLink" 
                    data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
                    Profile
                </a>
                <div class="dropdown-menu" aria-labelledby="navDropDownLink">
                    <a class="dropdown-item" href="#">Preferences</a>
                    <div class="dropdown-divider"></div>
                    <a class="dropdown-item" href="#">Logout</a>
                </div>
            </li>
        </ul>
               
    </div>
    
</nav>

＆＃13;

插件：https://plnkr.co/edit/VM1VEbVcTmadljARolaq?p=preview

Answer 1

Bootstrap具有JavaScript和jQuery依赖项，您无法加载它们。这就是原因。

尝试加载这些：

＆＃13;

<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>

＆＃13;

主要问题是您没有使用container。

试试这段代码：

＆＃13;

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">


<nav class="navbar navbar-expand-lg navbar-dark bg-dark">
    <div class="container">
        <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarTogglerDemo01" aria-controls="navbarTogglerDemo01" aria-expanded="false" aria-label="Toggle navigation">
    <span class="navbar-toggler-icon"></span>
</button>
        <a class="navbar-brand" href="#">
    <img src="http://www.bobmazzo.com/wp-content/uploads/2009/07/bobmazzoCD.jpg" width="30" height="30" >
</a>
        <div class="collapse navbar-collapse" id="navbarTogglerDemo01">
            <ul class="navbar-nav mr-auto mt-2 mt-lg-0">
                <li class="nav-item active">
                    <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
                </li>
                <li class="nav-item">
                    <a class="nav-link" href="#">Patients</a>
                </li>
                <li class="nav-item">
                    <a class="nav-link disabled" href="#">Reports</a>
                </li>

            </ul>

            <form id="searchForm" 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-success my-2 my-sm-0" type="submit">Search</button>
            </form>

            <ul class="navbar-nav ">
                <!-- PROFILE DROPDOWN - scrolling off the page to the right -->
                <li class="nav-item dropdown">
                    <a href="#" class="nav-link dropdown-toggle" id="navDropDownLink" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
                Profile
            </a>
                    <div class="dropdown-menu" aria-labelledby="navDropDownLink">
                        <a class="dropdown-item" href="#">Preferences</a>
                        <div class="dropdown-divider"></div>
                        <a class="dropdown-item" href="#">Logout</a>
                    </div>
                </li>
            </ul>

        </div>
    </div>

</nav>


<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>

＆＃13;

容器对于导航栏来说并不是绝对必要的，但它确实有助于防止其性质问题，并防止导航栏跨越宽阔的4K屏幕。

Answer 2

更改下拉菜单与右边的对齐方式对我来说很有效。将Boostrap类.dropdown-menu-right添加到下拉菜单。检出menu alignment in dropdowns

具有用户配置文件下拉列表的Bootstrap 4-beta.3导航栏

2 个答案: