Bootstrap’s modal box is overlaid on the parent form and is a child form; the purpose of the modal box is to display content from a separate source without leaving the parent form. There are some interactions, subforms can provide information interaction, etc. You can create a small modal box by adding the ".modal-sm" class, and create a large modal box by adding the ".modal-lg" class.
The operating environment of this tutorial: Windows 10 system, bootstrap version 5, DELL G3 computer
Modal is a subform that covers the parent form. Typically, the purpose is to display content from a separate source that can have some interaction without leaving the parent form. Subforms can provide information interaction, etc.
How to create a modal box
The following example creates a simple modal box effect:
<!DOCTYPE html> <html> <head> <title>Bootstrap 实例</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css"> <script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script> <script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script> <script src="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script> </head> <body> <div class="container"> <h2>模态框实例</h2> <!-- 按钮:用于打开模态框 --> <button type="button" class="btn btn-primary" data-toggle="modal" data-target="#myModal"> 打开模态框 </button> <!-- 模态框 --> <div class="modal fade" id="myModal"> <div class="modal-dialog"> <div class="modal-content"> <!-- 模态框头部 --> <div class="modal-header"> <h4 class="modal-title">模态框头部</h4> <button type="button" class="close" data-dismiss="modal">×</button> </div> <!-- 模态框主体 --> <div class="modal-body"> 模态框内容.. </div> <!-- 模态框底部 --> <div class="modal-footer"> <button type="button" class="btn btn-secondary" data-dismiss="modal">关闭</button> </div> </div> </div> </div> </div> </body> </html>
Output result:
Modal box size
We can create a small modal box by adding the .modal-sm class, and the .modal-lg class can create A large modal box.
The size class is placed after the .modal-dialog class of the
<!DOCTYPE html> <html> <head> <title>Bootstrap 实例</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css"> <script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script> <script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script> <script src="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script> </head> <body> <div class="container"> <h2>模态框实例</h2> <!-- 按钮:用于打开模态框 --> <button type="button" class="btn btn-primary" data-toggle="modal" data-target="#myModal"> 打开模态框 </button> <!-- 模态框 --> <div class="modal fade" id="myModal"> <div class="modal-dialog modal-sm"> <div class="modal-content"> <!-- 模态框头部 --> <div class="modal-header"> <h4 class="modal-title">模态框头部</h4> <button type="button" class="close" data-dismiss="modal">×</button> </div> <!-- 模态框主体 --> <div class="modal-body"> 模态框内容.. </div> <!-- 模态框底部 --> <div class="modal-footer"> <button type="button" class="btn btn-secondary" data-dismiss="modal">关闭</button> </div> </div> </div> </div> </div> </body> </html>
Output result:
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