Detailed explanation of Bootstrap button component_javascript skills

Button groups, like drop-down menu components, need to rely on the button.js plug-in to function properly.

Structural aspect: Use a container with a class name btn-group and place multiple buttons in this container .

The button group is also an independent component, so you can find the corresponding source code file:

Less: buttons.less

Sass:_buttons.scss

Css:Bootstrap.css Line 3131 ~ Line 3291

<div class="btn-group">
<button type="button" class="btn btn-default">
<span class="glyphicon glyphicon-step-backward"></span>
</button>
…
<button type="button" class="btn btn-default">
<span class="glyphicon glyphicon-step-forward"></span>
</button>
</div>

CSS:

.btn-group,
.btn-group-vertical {
position: relative;
display: inline-block;
vertical-align: middle;
}
.btn-group > .btn,
.btn-group-vertical > .btn {
position: relative;
float: left;
}
.btn-group > .btn:hover,
.btn-group-vertical > .btn:hover,
.btn-group > .btn:focus,
.btn-group-vertical > .btn:focus,
.btn-group > .btn:active,
.btn-group-vertical > .btn:active,
.btn-group > .btn.active,
.btn-group-vertical > .btn.active {
z-index: 2;
}
.btn-group > .btn:focus,
.btn-group-vertical > .btn:focus {
outline: none;
}
.btn-group .btn + .btn,
.btn-group .btn + .btn-group,
.btn-group .btn-group + .btn,
.btn-group .btn-group + .btn-group {
margin-left: -1px;
}

In addition to the element, you can also use other tag elements, such as the tag. The only thing to ensure is that no matter what tag is used, the tag element in the .btn-group container needs to contain There is a class name.btn

The four corners of the button group are rounded. Except for the first and last buttons, which have rounded corners on the sides, the other buttons have no rounded corners.

Detailed explanation:

1. Default: all buttons have rounded corners

2. Except for the first button and the last button, the rounded corners of other buttons are cancelled

3. Only the upper right corner and lower right corner of the last button are rounded

Source code:

.btn-group > .btn:not(:first-child):not(:last-child):not(.dropdown-toggle) {
border-radius: 0;
}
.btn-group > .btn:first-child {
margin-left: 0;
}
.btn-group > .btn:first-child:not(:last-child):not(.dropdown-toggle) {
border-top-right-radius: 0;
border-bottom-right-radius: 0;
}
.btn-group > .btn:last-child:not(:first-child),
.btn-group > .dropdown-toggle:not(:first-child) {
border-top-left-radius: 0;
border-bottom-left-radius: 0;
}
.btn-group > .btn-group {
float: left;
}
.btn-group > .btn-group:not(:first-child):not(:last-child) > .btn {
border-radius: 0;
}
.btn-group > .btn-group:first-child> .btn:last-child,
.btn-group > .btn-group:first-child> .dropdown-toggle {
border-top-right-radius: 0;
border-bottom-right-radius: 0;
}
.btn-group > .btn-group:last-child> .btn:first-child {
border-top-left-radius: 0;
border-bottom-left-radius: 0;
}

Button Group Toolbar

In the rich text editor, to arrange button groups together, such as copy, cut, paste a group, left-aligned, middle-aligned, right-aligned and both-end-aligned group, you need to use bootstrap Frame button toolbar btn-toolbar

<div class="btn-toolbar">
<div class="btn-group">
…
</div>
<div class="btn-group">
…
</div>
<div class="btn-group">
…
</div>
<div class="btn-group">
…
</div>
</div>

Principle: The main purpose is to float the multiple group .btn-group elements of the container, and maintain a left margin of 5px between groups

.btn-toolbar {
margin-left: -5px;
}
.btn-toolbar .btn-group,
.btn-toolbar .input-group {
float: left;
}
.btn-toolbar > .btn,
.btn-toolbar > .btn-group,
.btn-toolbar > .input-group {
margin-left: 5px;
}

Pay attention to clearing floats on btn-toolbar

.btn-toolbar:before,
.btn-toolbar:after｛
　display: table;
content: " ";
｝
.btn-toolbar:after{
clear: both;
}

Example:

<div class="btn-toolbar">
<div class="btn-group">
<button class="btn btn-default" type="button">
<span class="glyphicon glyphicon-align-left"></span>
</button>
<button class="btn btn-default" type="button">
<span class="glyphicon glyphicon-align-center"></span>
</button>
<button class="btn btn-default">
<span class="glyphicon glyphicon-align-right"></span>
</button>
<button class="btn btn-default" type="button">
<span class="glyphicon glyphicon-align-justify"></span>
</button>
</div>
<div class="btn-group">
<button class="btn btn-default" type="button">
<span class="glyphicon glyphicon-font"></span>
</button>
<button class="btn btn-default" type="button">
<span class="glyphicon glyphicon-bold"></span>
</button>
</div>
</div>

Button nested grouping

Many times, we arrange common button groups together in drop-down menus to achieve an effect similar to a navigation menu:

When using it, just change the class name of the dropdown container used to create the drop-down menu to btn-group, and put it at the same level as the ordinary button:

<div class="btn-group">
<button class="btn btn-default" type="button">首页</button>
<button class="btn btn-default" type="button">产品展示</button>
<button class="btn btn-default" type="button">案例分析</button>
<button class="btn btn-default" type="button">联系我们</button>
<div class="btn-group">
<button class="btn btn-default dropdown-toggle" data-toggle="dropdown" type="button">
关于我们<span class="caret"></span>
</button>
<ul class="dropdown-menu">
<li><a href="#">公司简介</a></li>
<li><a href="#">企业文化</a></li>
<li><a href="#">组织结构</a></li>
<li><a href="#">客服服务</a></li>
</ul>
</div>
</div>
.btn-group > .btn-group {
float: left;
}
.btn-group > .btn-group:not(:first-child):not(:last-child) > .btn {
border-radius: 0;
}
.btn-group > .btn-group:first-child> .btn:last-child,
.btn-group > .btn-group:first-child> .dropdown-toggle {
border-top-right-radius: 0;
border-bottom-right-radius: 0;
}
.btn-group > .btn-group:last-child> .btn:first-child {
border-top-left-radius: 0;
border-bottom-left-radius: 0;
}
.btn-group .dropdown-toggle:active,
.btn-group.open .dropdown-toggle {
outline: 0;
}
.btn-group > .btn + .dropdown-toggle {
padding-right: 8px;
padding-left: 8px;
}
.btn-group > .btn-lg + .dropdown-toggle {
padding-right: 12px;
padding-left: 12px;
}
.btn-group.open .dropdown-toggle {
-webkit-box-shadow: inset 0 3px 5px rgba(0, 0, 0, .125);
box-shadow: inset 0 3px 5px rgba(0, 0, 0, .125);
}
.btn-group.open .dropdown-toggle.btn-link {
-webkit-box-shadow: none;
box-shadow: none;
}

Buttons grouped vertically

Just replace the horizontal grouping class name .btn-group with .btn-group-vertical.

<div class="btn-group-vertical">
<button class="btn btn-default" type="button">首页</button>
<button class="btn btn-default" type="button">产品展示</button>
<button class="btn btn-default" type="button">案例分析</button>
<button class="btn btn-default" type="button">联系我们</button>
<div class="btn-group">
<button class="btn btn-default dropdown-toggle" data-toggle="dropdown" type="button">
关于我们<span class="caret"></span>
</button>
<ul class="dropdown-menu">
<li><a href="#">公司简介</a></li>
<li><a href="#">企业文化</a></li>
<li><a href="#">组织结构</a></li>
<li><a href="#">客服服务</a></li>
</ul>
</div>
</div>
.btn-group-vertical > .btn,
.btn-group-vertical > .btn-group,
.btn-group-vertical > .btn-group > .btn {
display: block;
float: none;
width: 100%;
max-width: 100%;
}
.btn-group-vertical > .btn-group > .btn {
float: none;
}
.btn-group-vertical > .btn + .btn,
.btn-group-vertical > .btn + .btn-group,
.btn-group-vertical > .btn-group + .btn,
.btn-group-vertical > .btn-group + .btn-group {
margin-top: -1px;
margin-left: 0;
}
.btn-group-vertical > .btn:not(:first-child):not(:last-child) {
border-radius: 0;
}
.btn-group-vertical > .btn:first-child:not(:last-child) {
border-top-right-radius: 4px;
border-bottom-right-radius: 0;
border-bottom-left-radius: 0;
}
.btn-group-vertical > .btn:last-child:not(:first-child) {
border-top-left-radius: 0;
border-top-right-radius: 0;
border-bottom-left-radius: 4px;
}
.btn-group-vertical > .btn-group:not(:first-child):not(:last-child) > .btn {
border-radius: 0;
}
.btn-group-vertical > .btn-group:first-child:not(:last-child) > .btn:last-child,
.btn-group-vertical > .btn-group:first-child:not(:last-child) > .dropdown-toggle {
border-bottom-right-radius: 0;
border-bottom-left-radius: 0;
}
.btn-group-vertical > .btn-group:last-child:not(:first-child) > .btn:first-child {
border-top-left-radius: 0;
border-top-right-radius: 0;
}

The equal division button is also called the adaptive grouping button:

The width of the entire button group is 100% of the container, and each button in the button group equally divides the width of the entire container. For example, there are five buttons in a button group, and each button is 20% of the width of the container; a button There are four buttons in the group, each button is 25% of the width of the container;

Implementation method: Just append a class name.btn-group-justified to button group.btn-group

<div class="btn-group btn-group-justified">
<buttton class="btn btn-default" type="button">首页</buttton>
<buttton class="btn btn-default" type="button">案例分析</buttton>
<buttton class="btn btn-default" type="button">联系我们</buttton>
<buttton class="btn btn-default" type="button">关于我们</buttton>
</div>
.btn-group-justified {
display: table;
width: 100%;
table-layout: fixed;
border-collapse: separate;
}
.btn-group-justified > .btn,
.btn-group-justified > .btn-group {
display: table-cell;
float: none;
width: 1%;
}
.btn-group-justified > .btn-group .btn {
width: 100%;
}

Simulate .btn-group-justified into a table (display: table), and simulate the button template inside into a table cell (display: table-cell).

Note: When making equal button groups, try to use the tag to make buttons, because when using the button tag element, using display: table is not friendly in some browsers.

Script House recommended reading:

Detailed explanation of Bootstrap button

The above is the Bootstrap button component introduced by the editor. I hope it will be helpful to everyone!