引导模态

编程问答 2022-08-14

问题描述

使用Bootstrap 4.5弄湿我的脚。而且我无法使Modal组件正常工作。

阅读文档多次。只是从网站复制并粘贴。

代码真的很简单。

所以我觉得我确实缺少一些明显的东西。

感谢见解...

PS-Bootstrap站点演示可在我的浏览器中工作。

<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/4.5.2/css/bootstrap.min.css" integrity="sha384-JcKb8q3iqJ61gNV9KGb8thSsNjpSL0n8PARn9HuZonixN0hoP+VmmDGMN5t9UJ0Z" crossorigin="anonymous">
    </head>
    
    <body>
        <!-- Button trigger modal -->
        <button type="button" class="btn btn-primary" data-toggle="modal" data-target="">
          Launch demo modal
        </button>

        <!-- Modal -->
        <div class="modal fade" id="exampleModal" tabindex="-1" aria-labelledby="exampleModalLabel" aria-hidden="true">
          <div class="modal-dialog">
            <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>
        
        <!-- Bootstrap jQuery first,then Popper.js,then Bootstrap JS -->
        <script src="https://code.jquery.com/jquery-3.5.1.slim.min.js" integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj" crossorigin="anonymous"></script>
        <script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.1/dist/umd/popper.min.js" integrity="sha384-9/reFTGAW83EW2RDu2S0VKaIzap3H66lZH81PoYlFhbGU+6BZp6G7niu735Sk7lN" crossorigin="anonymous"></script>
        <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js" integrity="sha384-B4gt1jrGC7Jh4AgTPSdUtOBvfO8shuf57BaghqFfPlYxofvL8/KUEfYiJOMMV+rV" crossorigin="anonymous"></script>
    </body>
</html>

解决方法

您错过了数据目标值

 <!-- Button trigger modal -->
        <button type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModal"> <!-- here you need to specify modal id -->
          Launch demo modal
        </button>
,

您需要为按钮指定数据目标以激活模式：data-target="#exampleModal"。请参见下面的代码段。

<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/4.5.2/css/bootstrap.min.css" integrity="sha384-JcKb8q3iqJ61gNV9KGb8thSsNjpSL0n8PARn9HuZOnIxN0hoP+VmmDGMN5t9UJ0Z" crossorigin="anonymous">
    </head>
    
    <body>
        <!-- Button trigger modal -->
        <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" aria-labelledby="exampleModalLabel" aria-hidden="true">
          <div class="modal-dialog">
            <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>
        
        <!-- Bootstrap jQuery first,then Popper.js,then Bootstrap JS -->
        <script src="https://code.jquery.com/jquery-3.5.1.slim.min.js" integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj" crossorigin="anonymous"></script>
        <script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.1/dist/umd/popper.min.js" integrity="sha384-9/reFTGAW83EW2RDu2S0VKaIzap3H66lZH81PoYlFhbGU+6BZp6G7niu735Sk7lN" crossorigin="anonymous"></script>
        <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js" integrity="sha384-B4gt1jrGC7Jh4AgTPSdUtOBvfO8shuf57BaghqFfPlYxofvL8/KUEfYiJOMMV+rV" crossorigin="anonymous"></script>
    </body>
</html>

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