javascript - 单击时，Bootstrap 模态未显示在 Angular 8 上

Question

我正在尝试在 Angular 应用程序中单击按钮时显示模式。我安装了 bootstrap 并编写了 bootstrap 教程中指定的代码。该模态在单击时可用，因为它在检查浏览器的 html 期间可用但不显示在浏览器上。但是，将模态元素的显示属性从 block 更改为内容会显示模态。请在下面找到当前代码。

<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css" rel="stylesheet"/>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>

<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/js/bootstrap.min.js"></script>

  <button type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModal">
                      Launch demo modal
                    </button>


<!-- Modal -->
<div class="modal fade" id="exampleModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">
  <div class="modal-dialog" role="document">
    <div class="modal-content">
      <div class="modal-header">
        <h5 class="modal-title" id="exampleModalLabel">Modal title</h5>
        <button type="button" class="close" data-dismiss="modal" aria-label="Close">
          <span aria-hidden="true">&times;</span>
        </button>
      </div>
      <div class="modal-body">
        ...
      </div>
      <div class="modal-footer">
        <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
        <button type="button" class="btn btn-primary">Save changes</button>
      </div>
    </div>
  </div>
</div>

模态显示在正常的 html 和 css 中而不是 Angular

Answer 1

试试下面的代码

在您的 HTML 文件中

<button type="button" class="btn btn-info btn-lg" (click)="openModal()">click to open</button>
    <div class="modal" tabindex="-1" role="dialog"  [ngStyle]="{'display':display}">
         <div class="modal-dialog" role="document">
               <div class="modal-content">
                     <div class="modal-header">
                           <h4 class="modal-title">Model Title</h4>
                           <button type="button" class="close" aria-label="Close" (click)="onCloseHandled()"><span aria-hidden="true">&times;</span></button>
                         </div>
                <div class="modal-body">
                           <p>Model body text</p>
                         </div>
                     <div class="modal-footer">
                           <button type="button" class="btn btn-default" (click)="onCloseHandled()" >Close</button>
                         </div>
            </div>
             </div>
 </div>

在你的 TS(组件)文件中

创建方法 2

 import { Component, OnInit } from '@angular/core';
@Component({
  selector: 'my-app',
  templateUrl: './app.component.html',
  styles:[
    `.modal{background: rgba(0,0,0, .5);`
  ]
})
export class AppComponent implements OnInit {
display = "none";
  ngOnInit() {
   }
openModal() {
    this.display = "block";
  }
  onCloseHandled() {
    this.display = "none";
  }
}

希望对你有帮助

如果有任何疑问，请告诉我

谢谢