使用BootStrap 3的原创的模态框组件，没法弹出！估计是原创的bug

最近在给客户开发一个CRM系统，其中用到了BOOTSTRAP的模态框。版本是3。由于是刚开始用该框架。所以在正式部署到项目中前，需要测试一下，找到框架中的如下部分。需要说明的是。我用的asp.net mvc框架开发。测试也是在asp.net  mvc环境下。

 复制版本3中的代码如下：

<button type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModal" data-whatever="@mdo">Open modal for @mdo</button>
<button type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModal" data-whatever="@fat">Open modal for @fat</button>
<button type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModal" data-whatever="@getbootstrap">Open modal for @getbootstrap</button>
...more buttons...

<div class="modal fade" id="exampleModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel">
  <div class="modal-dialog" role="document">
    <div class="modal-content">
      <div class="modal-header">
        <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
        <h4 class="modal-title" id="exampleModalLabel">New message</h4>
      </div>
      <div class="modal-body">
        <form>
          <div class="form-group">
            <label for="recipient-name" class="control-label">Recipient:</label>
            <input type="text" class="form-control" id="recipient-name">
          </div>
          <div class="form-group">
            <label for="message-text" class="control-label">Message:</label>
            <textarea class="form-control" id="message-text"></textarea>
          </div>
        </form>
      </div>
      <div class="modal-footer">
        <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
        <button type="button" class="btn btn-primary">Send message</button>
      </div>
    </div>
  </div>
</div>

上述代码经过改造，放在自己的mvc环境中：

    <button type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModal" data-whatever="s">Open modal for s</button>
    <div class="modal fade" id="exampleModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel">
        <div class="modal-dialog" role="document">
            <div class="modal-content">
                <div class="modal-header">
                    <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
                    <h4 class="modal-title" id="exampleModalLabel">New message</h4>
                </div>
                <div class="modal-body">
                    <form>
                        <div class="form-group">
                            <label for="recipient-name" class="control-label">Recipient:</label>
                            <input type="text" class="form-control" id="recipient-name">
                        </div>
                        <div class="form-group">
                            <label for="message-text" class="control-label">Message:</label>
                            <textarea class="form-control" id="message-text"></textarea>
                        </div>
                    </form>
                </div>
                <div class="modal-footer">
                    <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
                    <button type="button" class="btn btn-primary">Send message</button>
                </div>
            </div>
        </div>
    </div>
</div>

 运行，结果没法弹出模态框。后仔细查找发现问题出在button的代码上面：

    <button type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModal" data-whatever="s">Open modal for s</button>

发现该代码是bootstrap 3版本的写法，遂换成如下bootstrap 5的写法：

<button type="button" class="btn btn-primary" data-bs-toggle="modal" data-bs-target="#exampleModal" data-whatever="hello">Open modal for hello</button>

然后OK!