我尝试了一下,但是当我单击Dropdown link
nemu时,什么也没发生。
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav mr-auto">
<li class="nav-item">
<a class="nav-link" routerLink="dashboard">dashboard</a>
</li>
<li class="nav-item">
<a class="nav-link" routerLink="calendar">calendar</a>
</li>
<li class="nav-item">
<a class="nav-link" routerLink="manager">manager</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" id="navbardrop" data-toggle="dropdown">
Dropdown link
</a>
<div class="dropdown-menu">
<a class="dropdown-item" href="#">Link 1</a>
<a class="dropdown-item" href="#">Link 2</a>
<a class="dropdown-item" href="#">Link 3</a>
</div>
</li>
</ul>
<!--ul class="navbar-nav navbar-right">
</ul-->
</div>
</nav>
编辑:
我使用https://ng-bootstrap.github.io/#/components/datepicker/overview和navbar不存在。
答案 0 :(得分:2)
我在ng-bootstrap文档中发现navbar不存在。所以我添加了jQuery,它就可以工作。
npm install bootstrap --save
npm install jquery --save
并将其添加到angular.json(Angular 7):
"scripts": [
"node_modules/jquery/dist/jquery.js",
"node_modules/bootstrap/dist/js/bootstrap.js"
]
答案 1 :(得分:1)
可能您不应在项目中包含bootstrap.min.js(jquery和popper.js也是如此)。
"styles":[
"styles.css",
"../node_modules/bootstrap/dist/css/bootstrap.css"
],
"scripts":[
"../node_modules/jquery/dist/jquery.js",
"../node_modules/bootstrap/dist/js/popper.js",
"../node_modules/bootstrap/dist/js/bootstrap.js"
],
答案 2 :(得分:1)
如果您不想在项目中添加 jquery,pooper和bootstrap JS ,则可以这样做,我添加了navbar和btn-group的示例
解释
show class is use to show menu of dropdown
当您点击 anchor 标记时, show 变量切换且其中包含布尔类型(在 .ts 文件中指定)。在 div.dropdown菜单时检查 show 类,如果其为false,则无法显示,反之亦然。
app.component.html
在导航栏中
<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">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav mr-auto">
<li class="nav-item active">
<a class="nav-link" href="javascript:void(0)">Home</a>
</li>
<li class="nav-item">
<a class="nav-link" href="javascript:void(0)">List 1</a>
</li>
<li class="nav-item">
<a class="nav-link" href="javascript:void(0)">List 2</a>
</li>
</ul>
<ul class="navbar-nav">
<li class="nav-item dropdown ml-auto">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" data-toggle="dropdown" (click)="show=!show">Dropdown</a>
<div class="dropdown-menu dropdown-menu-right" aria-labelledby="navbarDropdown" [ngClass]="{show: show === true}">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="#">Something else here</a>
</div>
</li>
</ul>
</div>
</nav>
在btn组中
<div class="btn-group">
<button type="button" class="btn btn-info dropdown-toggle" data-toggle="dropdown" (click)="show=!show">Action</button>
<div class="dropdown-menu" [ngClass]="{show: show === true}">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
</div>
</div>
app.component.ts
import {Component, EventEmitter, OnInit, Output} from '@angular/core';
@Component({
selector: 'app-header',
templateUrl: './header.component.html',
styleUrls: ['./header.component.css']
})
export class HeaderComponent implements OnInit {
show: boolean = false;
constructor() {}
ngOnInit() {}
}
答案 3 :(得分:0)
它不起作用,因为我认为popper.js存在问题,我遇到了同样的问题,但是我能够解决它...在您的angular.json中尝试
导入脚本
"./node_modules/jquery/dist/jquery.js",
"./node_modules/bootstrap/dist/js/bootstrap.bundle.js"
它应该工作