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html - Angular Bootstrap 4 Navbar 不会切换和 navbar-dark 问题

问题描述

当我有一个小屏幕宽度并且我试图单击汉堡包来切换导航时 - 没有任何反应。我已经尝试用已经提出的问题来解决问题，但我无法找到我的错误。

此外，一旦我删除navbar-dark汉堡包消失 - 再次将此类添加到对象中，将导航栏的颜色更改为白色，这是我不希望的。 

<nav class="navbar navbar-dark navbar-expand-lg">
  <div class="container-fluid px-0">
    <div class="row w-100">
      <div class="col-2">
        <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarTogglerDemo03" aria-controls="navbarTogglerDemo03" aria-expanded="false" aria-label="Toggle navigation">
          <span class="navbar-toggler-icon"></span>
        </button>
      </div>

      <div class="col-10">
        <div class="collapse justify-content-end navbar-collapse" id="navbarTogglerDemo03">
          <ul class="navbar-nav mt-2 mt-lg-0">
            <li class="nav-item active">
              <a class="nav-link" href="#">Home</a>
            </li>
            <li class="nav-item">
              <a class="nav-link" href="#">About</a>
            </li>
            <li class="nav-item">
              <a class="nav-link" href="#">Portfolio</a>
            </li>
            <li class="nav-item">
              <a class="nav-link" href="#">Book Me</a>
            </li>
          </ul>
        </div>
      </div>
    </div>
  </div>
</nav>


角.json：

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

包.json：

"dependencies": {
    "@angular/animations": "^7.2.11",
    "@angular/cdk": "^7.3.6",
    "@angular/common": "~7.2.0",
    "@angular/compiler": "~7.2.0",
    "@angular/core": "~7.2.0",
    "@angular/fire": "^5.1.1",
    "@angular/forms": "~7.2.0",
    "@angular/material": "^7.3.6",
    "@angular/platform-browser": "~7.2.0",
    "@angular/platform-browser-dynamic": "~7.2.0",
    "@angular/router": "~7.2.0",
    "aos": "^2.3.4",
    "bootstrap": "^4.3.1",
    "core-js": "^2.5.4",
    "firebase": "^5.8.5",
    "jquery": "^3.3.1",
    "ng-recaptcha": "^4.2.1",
    "popper.js": "^1.14.7",
    "rxjs": "~6.3.3",
    "tslib": "^1.9.0",
    "zone.js": "~0.8.26"
  },

标签： htmlcssangulartwitter-bootstrapbootstrap-4

解决方案

你有几个问题：

  1. 像这里一样将引导程序安装到 Angular 6+
  2. 将bg-dark类添加到<nav>
  3. 使用此示例演示 Angular 中的引导行为

请参阅此处的工作代码

HTML

<nav class="navbar navbar-dark bg-dark navbar-expand-lg">
  <div class="container-fluid px-0">
    <div class="row w-100">
      <div class="col-2">
        <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarTogglerDemo03" aria-controls="navbarTogglerDemo03" aria-expanded="false" aria-label="Toggle navigation" (click)="isShown = !isShown" >
          <span class="navbar-toggler-icon"></span>
        </button>
      </div>

      <div class="col-10">
        <div class="collapse justify-content-end navbar-collapse" [ngClass]="{ 'show': isShown }" id="navbarTogglerDemo03">
          <ul class="navbar-nav mt-2 mt-lg-0">
            <li class="nav-item active">
              <a class="nav-link" href="#" (click)="isShown = false" >Home</a>
            </li>
            <li class="nav-item">
              <a class="nav-link" href="#" (click)="isShown = false" >About</a>
            </li>
            <li class="nav-item">
              <a class="nav-link" href="#" (click)="isShown = false" >Portfolio</a>
            </li>
            <li class="nav-item">
              <a class="nav-link" href="#" (click)="isShown = false" >Book Me</a>
            </li>
          </ul>
        </div>
      </div>
    </div>
  </div>
</nav>

TS

isShown:boolean=false;

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