What does bootstrap modal mean?
In bootstrap, modal refers to the "modal box", which is a subform covering the parent form; its purpose is to display content from a separate source without leaving the parent window. There is some interaction in the case of bodies. Modal boxes can add eye-catching prompts and interactions to the website for user notifications, visitor interactions, message alerts, or customized content interactions.
The operating environment of this tutorial: Windows7 system, bootsrap3.3.7 version, DELL G3 computer
The modal box (Modal) is overlaid on the parent A subform on a form. Typically, the purpose is to display content from a separate source that can have some interaction without leaving the parent form. Subforms provide information, interaction, and more.
Bootstrap pop-up modal box style
Use Bootstrap's JavaScript modal box plug-in to add eye-catching prompts and interactions to your website to notify users and visitors Interactions, message alerts or customized content interactions.
Close the modal box:
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Click the x in the upper right corner
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Click the close button in the lower right corner
Click on the mask layer
How it works
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Pop-up modal boxes are built with HTML, CSS and Javascript. They sit on top of other presentation elements in the document and remove scrolling from the
event so that the content of the modal box itself can be scrolled. Click the "backdrop" (gray background area) of the modal box to automatically close the dynamic module box.
Bootstrap only supports one modal window at a time and does not support nested modes, because superposition will cause a poor user experience.
The modal box uses position: fixed, which is very different from other elements in presentation. Please put the HTML of the pop-up modal box at the top level as much as possible to avoid interference from other elements. Especially when the .modal event is also defined in another fixed element, you may encounter problems.
It is also affected by the position: fixed attribute. There are some precautions when using modal boxes on mobile devices.
According to the semantic definition of HTML5, the autofocusHTML attribute has no effect on the Bootstrap modal box. To achieve the same effect, you need to use some JavaScript.
Normal modal box
.modal: The outermost container of the modal box.
.modal-dialog: Modal box container.
.modal-content: Place the content of the modal box and set the modal box style.
.modal-header: modal box header.
.modal-title: modal box title.
.modal-body: Modal body content.
.modal-footer: modal box footer content.
<div class="modal fade" id="modal1"> <div class="modal-dialog"> <div class="modal-content"> <div class="modal-header"> <h5 id="标题">标题</h5> <button class="close" data-dismiss="modal"> <span>×</span> </button> </div> <div class="modal-body"> ur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla. </div> <div class="modal-footer"> <button class="btn btn-secondary" data-dismiss="modal">关闭</button> <button class="btn btn-primary">保存</button> </div> </div> </div> </div> <div class="container"> <div class="row mt-5"> <div class="col"> <button class="btn btn-primary" data-toggle="modal" data-target="#modal1">普通的模态框</button> </div> </div> </div>
Modal box with scroll bar
When the user viewport viewport (pop-up content area ) or the device's modal becomes longer, they automatically scroll the page.
<div class="modal fade" id="modal1"> <div class="modal-dialog"> <div class="modal-content"> <div class="modal-header"> <h5 id="标题">标题</h5> <button class="close" data-dismiss="modal"> <span>×</span> </button> </div> <div class="modal-body"> <p>ur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p> <p>ur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p> <p>ur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p> <p>ur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p> <p>ur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p> <p>ur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p> <p>ur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p> <p>ur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p> <p>ur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p> <p>ur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p> <p>ur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p> <p>ur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p> <p>ur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p> <p>ur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p> <p>ur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p> <p>ur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p> <p>ur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p> <p>ur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p> <p>ur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p> <p>ur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p> <p>ur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p> <p>ur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p> <p>ur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p> <p>ur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p> </div> <div class="modal-footer"> <button class="btn btn-secondary" data-dismiss="modal">关闭</button> <button class="btn btn-primary">保存</button> </div> </div> </div> </div> <div class="container"> <div class="row mt-5"> <div class="col"> <button class="btn btn-primary" data-toggle="modal" data-target="#modal1">有滚动条的模态框</button> </div> </div> </div>
Vertically Centered Modal
Add .modal-dialog-centered to .modal-dialog dialog box to Vertically centered mode.
<!-- 垂直居中的模态框 --> <div class="modal fade" id="modal2"> <div class="modal-dialog modal-dialog-centered"> <!-- modal-dialog-centered这个class要加在这里 --> <div class="modal-content"> <div class="modal-header"> <h5 id="标题">标题</h5> <button class="close" data-dismiss="modal"> <span>×</span> </button> </div> <div class="modal-body"> 垂直居中的模态框 </div> <div class="modal-footer"> <button class="btn btn-secondary" data-dismiss="modal">关闭</button> <button class="btn btn-primary">保存</button> </div> </div> </div> </div> <div class="container"> <div class="row mt-5"> <div class="col"> <button class="btn btn-secondary" data-toggle="modal" data-target="#modal2">垂直居中的模态框</button> </div> </div> </div>
Modal box containing grid system
Add .container-fluid grid system to .modal-body , you can use the Bootsrap grid system in dynamic viewports and use the normal grid system class definition everywhere.
<!-- 使用栅格系统 --> <div class="modal fade" id="modal3"> <div class="modal-dialog modal-dialog-centered"> <!-- modal-dialog-centered这个class要加在这里 --> <div class="modal-content"> <div class="modal-header"> <h5 id="标题">标题</h5> <button class="close" data-dismiss="modal"> <span>×</span> </button> </div> <div class="modal-body"> <div class="container-fluid"> <div class="row"> <div class="col-md-4 bg-info border">第1列</div> <div class="col-md-4 bg-info border">第2列</div> <div class="col-md-4 bg-info border">第3列</div> <div class="col-md-12 bg-info border">第4列</div> </div> <div class="row"> <div class="col bg-info border">第1列</div> <div class="col bg-info border">第2列</div> <div class="col bg-info border">第3列</div> <div class="col bg-info border">第4列</div> </div> <div class="row"> <div class="col-md-5 bg-info">第1列</div> <div class="col-md-4 bg-info ml-auto">第2列</div> </div> <div class="row mt-3"> <div class="col-xl-2 col-lg-3 col-md-4 col-sm-6 col-12 bg-info border">超大屏6个，大屏4个，中等屏3个，小屏2个，超小屏1个</div> <div class="col-xl-2 col-lg-3 col-md-4 col-sm-6 col-12 bg-info border">超大屏6个，大屏4个，中等屏3个，小屏2个，超小屏1个</div> <div class="col-xl-2 col-lg-3 col-md-4 col-sm-6 col-12 bg-info border">超大屏6个，大屏4个，中等屏3个，小屏2个，超小屏1个</div> <div class="col-xl-2 col-lg-3 col-md-4 col-sm-6 col-12 bg-info border">超大屏6个，大屏4个，中等屏3个，小屏2个，超小屏1个</div> <div class="col-xl-2 col-lg-3 col-md-4 col-sm-6 col-12 bg-info border">超大屏6个，大屏4个，中等屏3个，小屏2个，超小屏1个</div> <div class="col-xl-2 col-lg-3 col-md-4 col-sm-6 col-12 bg-info border">超大屏6个，大屏4个，中等屏3个，小屏2个，超小屏1个</div> </div> </div> </div> <div class="modal-footer"> <button class="btn btn-secondary" data-dismiss="modal">关闭</button> <button class="btn btn-primary">保存</button> </div> </div> </div> </div> <div class="container"> <div class="row mt-5"> <div class="col"> <button class="btn btn-danger" data-toggle="modal" data-target="#modal3">包含栅格系统的模态框</button> </div> </div> </div>
The size of the modal box
Add the modal box size to .modal-dialog.
| Description | Modal max-width | |
|---|---|---|
| Extra Large Size | 1140px | |
| Large Size | 800px | |
| Default size | 500px | |
| Small size | 300px |
