Bootstrap导航栏和面板从网站上消失了

时间：2017-11-03 17:37:59

标签： html css twitter-bootstrap angular twitter-bootstrap-3

我有一个使用bootstrap的angular2网站，它可以完美地工作2个月。今天许多bootstrap的功能都消失了。下面是图片 - 顶部的白色条纹是导航栏曾经的位置 - 导航栏的标题仍然存在，但是颜色和其他项目（如登录，注册等）不可见（或者不再存在） ）。我试图将bootstrap 3.3.7更改为4beta，但结果仍然相同......

enter image description here

以前的表现：

enter image description here

的index.html：

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<!doctype html>
<html>

<head>
  <meta charset="utf-8">
  <title>Image Annotation</title>
  <base href="/">
  <link rel="stylesheet" href="https://bootswatch.com/flatly/bootstrap.css">
  <!--link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/css/bootstrap.min.css" integrity="sha384-PsH8R72JQ3SOdhVi3uxftmaW6Vc51MKb0q5P2rRUpPvrszuE4W1povHYgTpBfshb" crossorigin="anonymous"-->
  <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">
</head>

<body>
  <app-root></app-root>
  <!--script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.3/umd/popper.min.js" integrity="sha384-vFJXuSJphROIrBnz7yo7oB41mKfc8JzQZiCq4NCceLEaO4IHwicKwpJf9c9IpFgh" crossorigin="anonymous"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/js/bootstrap.min.js" integrity="sha384-alpBpkh1PFOepccYVYDB4do5UnbKysX5WZXm3XxPqe5iKTfUKjNkCk9SaVuEZflJ" crossorigin="anonymous"></script-->
  <script src="https://code.jquery.com/jquery-3.2.1.js" integrity="sha256-DZAnKJ/6XZ9si04Hgrsxu/8s717jcIzLy3oi35EouyE=" crossorigin="anonymous"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>
</body>

</html>
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navbar.component.html：

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<nav class="navbar navbar-default">
  <div class="container">
    <div class="navbar-header">
      <a class="navbar-brand" routerLink="/">Imaging Annotation and Management</a>
    </div>
    <div id="navbar" class="navbar-collapse collapse">
      <ul class="nav navbar-nav navbar-left">
        <li *ngIf="authService.loggedIn()" [routerLinkActive]="['active']" [routerLinkActiveOptions]="{exact:true}"><a routerLink="/dashboard">Dashboard</a></li>
        <li><a *ngIf="authService.loggedIn()" routerLink="/profile" >Profile</a></li>
        <li><a *ngIf="authService.loggedIn()" routerLink="/anno" >Annotation</a></li>
        <li><a *ngIf="!authService.loggedIn()" routerLink="/login" >Login</a></li>
        <li><a *ngIf="authService.loggedIn()" href="#" (click)="onLogoutClick()">Logout</a></li>
        <li *ngIf="!authService.loggedIn()" [routerLinkActive]="['active']" [routerLinkActiveOptions]="{exact:true}"><a routerLink="/register" >Register</a></li>
      </ul>
    </div>
    <!--/.nav-collapse -->
  </div>
</nav>
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1 个答案:

答案 0 :(得分：0)

我回来做生意））问题在于这个代码：

<link rel="stylesheet" href="https://bootswatch.com/flatly/bootstrap.css">

我切换到标准引导程序，它现在可以工作：

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
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