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"切换按钮在导航栏的引导程序 4 和 Angular 7 应用程序中不起作用"

[英]Toggle button not working in bootstrap 4 and angular 7 app for navbar

I am working with Angular7 and Botstrap4.我正在使用 Angular7 和 Botstrap4。 trying to add navbar in my app, when navbar is collapsed, toggle button not working.尝试在我的应用程序中添加导航栏,当导航栏折叠时,切换按钮不起作用。

I don't want to add ng-bootstrap, only bootstrap4.我不想添加 ng-bootstrap,只添加 bootstrap4。

Here is my code这是我的代码

<nav class="navbar navbar-expand-lg navbar-light bg-light">
  <a class="navbar-brand" href="#">{{title}}</a>
  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarTogglerDemo02" aria-controls="navbarTogglerDemo02" aria-expanded="false" aria-label="Toggle navigation">
    <span class="navbar-toggler-icon"></span>
  </button>

  <div class="collapse navbar-collapse" id="navbarTogglerDemo02">
    <ul class="navbar-nav mr-auto mt-2 mt-lg-0">
      <li class="nav-item active">
        <a class="nav-link" routerLink="home">Home <span class="sr-only">(current)</span></a>
      </li>
      <li class="nav-item">
        <a class="nav-link" routerLink="about">About Us</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" routerLink="contact">Contact Us</a>
      </li>
    </ul>

    <form class="form-inline my-2 my-lg-0">
      <input class="form-control mr-sm-2" type="search" placeholder="Search">
      <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
    </form>
  </div>
</nav>

I think you forgot to include the bootstrap.min.js , jquery.min.js , and popper.min.js file links in angular.json where you already put the bootstrap.min.css .我认为您忘记在angular.json中包含bootstrap.min.jsjquery.min.jspopper.min.js文件链接,您已经在其中放置了bootstrap.min.css

"styles": [
 "src/styles.css",
 "./node_modules/bootstrap/dist/css/bootstrap.min.css",
],
"scripts": [
  "./node_modules/bootstrap/dist/js/bootstrap.min.js",
  "./node_modules/jquery/dist/jquery.min.js",
  "./node_modules/popperjs/dist/popper.min.js"
]

The simple solution to this problem is to import the scripts for jquery, popper and bootstrap intot the index.html file of your application.这个问题的简单解决方案是将 jquery、popper 和 bootstrap 的脚本导入到应用程序的 index.html 文件中。 Doing this will allow your navbar dropdown collapsed nav-links.这样做将允许您的导航栏下拉菜单折叠导航链接。

i did this and it works very well for me.我这样做了,对我来说效果很好。 See sample below请参阅下面的示例

 <!doctype html> <html lang="en"> <head> <meta charset="utf-8"> <title>TestApp</title> <base href="/"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="icon" type="image/x-icon" href="favicon.ico"> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css"> <script src="https://code.jquery.com/jquery-3.4.1.slim.min.js" integrity="sha384-J6qa4849blE2+poT4WnyKhv5vZF5SrPo0iEjwBvKU7imGFAV0wwj1yYfoRSJoZ+n" crossorigin="anonymous"> </script> <script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js" integrity="sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo" crossorigin="anonymous"> </script> <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js" integrity="sha384-wfSDF2E50Y2D1uUdj0O3uMBJnjuUD4Ih7YwaYd1iqfktj0Uod8GCExl3Og8ifwB6" crossorigin="anonymous"> </script> </head> <body> <app-root></app-root> </body> </html>

对于我在 Angular 13 应用程序中的情况,我必须将data-bs-toggle更改为data-toggle并将data-bs-dismiss更改为data-dismiss以关闭按钮,它运行良好。

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