twitter-bootstrap 带有 ng-bootstrap (4) angular 2 (cli) 的导航栏中的下拉切换问题
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dropdown toggle issue in navbar with ng-bootstrap (4) angular 2 (cli)
提问by Tanweer
I followed the instructions described hereand css is working perfectly. For the dropdown toggle I used this code
我按照此处描述的说明进行操作，css 运行良好。对于下拉切换，我使用了此代码
<nav class="navbar navbar-light bg-faded">
<a class="navbar-brand" href="#">Navbar</a>
<ul class="nav navbar-nav">
<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="#">Link</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="supportedContentDropdown" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
<div class="dropdown-menu" aria-labelledby="supportedContentDropdown">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<a class="dropdown-item" href="#">Something else here</a>
</div>
</li>
</ul>
<form class="form-inline float-xs-right">
<input class="form-control" type="text" placeholder="Search">
<button class="btn btn-outline-success" type="submit">Search</button>
</form>
</nav>
But the dropdown toggle is not working, although I include NgbModule for Root. Please me know if I had to include something else in my component providers array or anything else. Thanks in advance
但是下拉切换不起作用，尽管我为 Root 包含了 NgbModule。请知道我是否必须在组件提供程序数组或其他任何内容中包含其他内容。提前致谢
采纳答案by Tanweer
I got it working like this:
我让它像这样工作：
<nav class="navbar navbar-light bg-faded">
<a class="navbar-brand" href="#">Navbar</a>
<ul class="nav navbar-nav">
<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="#">Link</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item dropdown">
<div ngbDropdown class="d-inline-block">
<button class="btn btn-outline-primary" id="dropdownMenu1" ngbDropdownToggle>Toggle dropdown</button>
<div ngbDropdownMenu class="dropdown-menu" aria-labelledby="dropdownMenu1">
<button class="dropdown-item">Action - 1</button>
<button class="dropdown-item">Another Action</button>
<button class="dropdown-item">Something else is here</button>
</div>
</div>
</li>
</ul>
<form class="form-inline float-xs-right">
<input class="form-control" type="text" placeholder="Search">
<button class="btn btn-outline-success" type="submit">Search</button>
</form>
</nav>
As pointed above in the comment (link)
正如上面评论中所指出的（链接）
回答by jmiguel77
I ended up doing something like this:
我最终做了这样的事情：
In the html template i have this code:
在 html 模板中，我有以下代码：
<nav id="mainNavbar" class="navbar navbar-expand-lg navbar-dark bg-dark fixed-top">
<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
(click)="toggleCollapsed()">
<span class="navbar-toggler-icon"></span>
</button>
<div id="navbarSupportedContent" [ngClass]="{'collapse': collapsed, 'navbar-collapse': true}">
......
</nav>
In the component i have this
在组件中我有这个
export class NavComponent {
collapsed = true;
toggleCollapsed(): void {
this.collapsed = !this.collapsed;
}
}
回答by coldiron
modify your drown down html parts to this:
将您淹没的 html 部分修改为：
<li class="nav-item dropdown">
<div ngbDropdown class="d-inline-block">
<button class="btn btn-outline-primary" id="dropdownMenu1"
**ngbDropdownToggle**>use Attrib ngbDropdownToggle</button>
<!-- use ngbDropdownMenu -->
<div **ngbDropdownMenu** class="dropdown-menu" aria-labelledby="dropdownMenu1">
<button class="dropdown-item">Action - 1</button>
<button class="dropdown-item">Another Action</button>
<button class="dropdown-item">Something else is here</button>
</div>
</div>
</li>
