Bootstrap angular 4 中的 Offcanvas 示例

Question

我是 angular 的新开发者，我正尝试在我的应用程序中复制此 bootstrap navbar example。问题是 navbar 的响应在我将它传递给 angular 时不起作用。我为它安装了所有必要的依赖项，但它不起作用，我不明白为什么。

这是一个完美运行的示例，但它是在未使用 angular:

的情况下构建的

<!doctype html>
<html lang="en">
  <head>
    <!-- Required meta tags -->
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

    <!-- Bootstrap CSS -->
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css" integrity="sha384-9gVQ4dYFwwWSjIDZnLEWnxCjeSWFphJiwGPXr1jddIhOegiu1FwO5qRGvFXOdJZ4" crossorigin="anonymous">

    <link href="offcanvas.css" rel="stylesheet">
    <title>Hello, world!</title>
  </head>
  <body>

    <nav class="navbar navbar-expand-lg fixed-top navbar-dark bg-dark">
      <a class="navbar-brand mr-auto mr-lg-0" href="#">Offcanvas navbar</a>
      <button class="navbar-toggler p-0 border-0" type="button" data-toggle="offcanvas">
        <span class="navbar-toggler-icon"></span>
      </button>

      <div class="navbar-collapse offcanvas-collapse" id="navbarsExampleDefault">
        <ul class="navbar-nav mr-auto">
          <li class="nav-item active">
            <a class="nav-link" href="#">Dashboard <span class="sr-only">(current)</span></a>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="#">Notifications</a>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="#">Profile</a>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="#">Switch account</a>
          </li>
          <li class="nav-item dropdown">
            <a class="nav-link dropdown-toggle" href="http://example.com" id="dropdown01" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Settings</a>
            <div class="dropdown-menu" aria-labelledby="dropdown01">
              <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 my-2 my-lg-0">
          <input class="form-control mr-sm-2" type="text" placeholder="Search" aria-label="Search">
          <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
        </form>
      </div>
    </nav>

    <!-- Optional JavaScript -->
    <!-- jQuery first, then Popper.js, then Bootstrap JS -->
    <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.0/umd/popper.min.js" integrity="sha384-cs/chFZiN24E4KMATLdqdvsezGxaGsi4hLGOzlXwp5UZB1LY//20VyM2taTB4QvJ" crossorigin="anonymous"></script>
    <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js" integrity="sha384-uefMccjFJAIv6A+rW+L4AHf99KvxDjWSu1z9VI8SKNVmz4sk7buKt/6v9KI65qnm" crossorigin="anonymous"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/holder/2.9.4/holder.js" integrity="sha256-crfkMD0BL2TtiwpbIlXF/SVmGSvOtgbMM8GBkibVKyc=" crossorigin="anonymous"></script>
    <script>
      $(function () {
        'use strict'
        $('[data-toggle="offcanvas"]').on('click', function () {
          $('.offcanvas-collapse').toggleClass('open')
        })
      })
    </script>
  </body>
</html>

但是当我将此代码翻译成 angular 时，它不起作用。我认为发现差异的具体部分是：

<script>
 $(function () {
   'use strict'
    $('[data-toggle="offcanvas"]').on('click', function () {
     $('.offcanvas-collapse').toggleClass('open')
   })
 })
</script>

我的问题是这部分如何翻译成 angular？

Answer 1

确实，问题中提到的那部分功能正是我需要的

这是我的 angular component.html:

<!doctype html>
<html lang="en">
  <head>
    <!-- Required meta tags -->
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
    <title>Hello, world!</title>
  </head>
  <body>

    <nav class="navbar navbar-expand-lg fixed-top navbar-dark bg-dark">
      <a class="navbar-brand mr-auto mr-lg-0" href="#">Offcanvas navbar</a>
      <button class="navbar-toggler p-0 border-0" type="button" (click)="toggle()">
        <span class="navbar-toggler-icon"></span>
      </button>

      <div class="navbar-collapse offcanvas-collapse" id="navbarsExampleDefault">
        <ul class="navbar-nav mr-auto">
          <li class="nav-item active">
            <a class="nav-link" href="#">Dashboard <span class="sr-only">(current)</span></a>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="#">Notifications</a>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="#">Profile</a>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="#">Switch account</a>
          </li>
          <li class="nav-item dropdown">
            <a class="nav-link dropdown-toggle" href="http://example.com" id="dropdown01" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Settings</a>
            <div class="dropdown-menu" aria-labelledby="dropdown01">
              <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 my-2 my-lg-0">
          <input class="form-control mr-sm-2" type="text" placeholder="Search" aria-label="Search">
          <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
        </form>
      </div>
    </nav>
  </body>
</html>

这是我在 angular 中的 component.ts:

import { Component, OnInit } from '@angular/core';
declare var jQuery:any;
declare var $:any;
@Component({
  selector: 'app-user-dashboard-menu',
  templateUrl: './user-dashboard-menu.component.html',
  styleUrls: ['./user-dashboard-menu.component.css']
})
export class UserDashboardMenuComponent implements OnInit {

  constructor() { }

  toggle(){
    $('.offcanvas-collapse').toggleClass('open');
  }
  ngOnInit() {
  }

}

上面显示了一种将 Jquery 函数转换为 angular 组件的方法！

Answer 2

只是运行路由终端中的这个：

npm i bootstrap jquery popper.js

然后在 polyfills.ts 中添加：

import 'jquery';
import 'popper.js';
import 'bootstrap';

Bootstrap angular 4 中的 Offcanvas 示例

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