Bootstrap 模态不弹出

Question

我目前正在学习 Bootstrap，我刚刚将一大块 Modal 组件代码放入我的项目中。但是，在我运行程序之后，我发现它无法正常工作，并且按钮没有按预期响应。所以我只是想知道是否有人可以帮助我？我会非常感激。

<!-- Button trigger modal -->
<button type="button" class="btn btn-primary btn-lg" data-toggle="modal" data-target="#myModal">Launch demo modal</button>

<!-- Modal -->
<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
<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="myModalLabel">Modal title</h4>
        </div>
        <div class="modal-body">
            ...
        </div>
        <div class="modal-footer">
            <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
            <button type="button" class="btn btn-primary">Save changes</button>
        </div>
    </div>
</div>

Answer 1

Bootstrap 需要 jQuery。如果您为正在使用的任何浏览器打开开发人员工具，您会在控制台中看到错误。

将 <script src="https://code.jquery.com/jquery-2.2.0.min.js"></script> 添加到您的 html

Answer 2

也许你只是忘了包含 bootstrapjs 和 jquery

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>

<script src="<your path to js file>bootstrap.js"></script>

Answer 3

您的代码没有问题： https://jsfiddle.net/jsfiddleakarsh/6o0spz8g/ 启动演示模式

                                                    <!-- Modal -->
                                                    <div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
                                                        <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="myModalLabel">Modal title</h4>
                                                                </div>
                                                                <div class="modal-body">
                                                                    ...
                                                                </div>
                                                                <div class="modal-footer">
                                                                    <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
                                                                    <button type="button" class="btn btn-primary">Save changes</button>
                                                                </div>
                                                            </div>
                                                        </div>
                                                    </div>

Answer 4

您忘记了 jQuery 只需添加

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>

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