Bootstrap Buttons

Button Styles

Bootstrap provides different styles of buttons:

 

To achieve the button styles above,Bootstrap has the following classes:

• .btn
• .btn-default
• .btn-primary
• .btn-success
• .btn-info
• .btn-warning
• .btn-danger
• .btn-link                     

The following example shows the code for the different button styles:

<button type="button" class="btn">Basic</button>
<button type="button" class="btn btn-default">Default</button>
<button type="button" class="btn btn-primary">Primary</button>
<button type="button" class="btn btn-success">Success</button>
<button type="button" class="btn btn-info">Info</button>
<button type="button" class="btn btn-warning">Warning</button>
<button type="button" class="btn btn-danger">Danger</button>

<button type="button" class="btn btn-link">Link</button>

 

the class btn provides the display style,the btn-* provides the different color

 

 

The button classes can be used on an <a>,<button>,or<input> element:

 

<a href="#" class="btn btn-info" role="button">Link Button</a>

 

<button type="button" class="btn btn-info">Button</button>
<input type="button" class="btn btn-info" value="Input Button">

<input type="submit" class="btn btn-info" value="Submit Button">

 

Why do we put a # in the href attribute of the link?

Since we do not have any page to link it to, and we do not want to get a "404" message, we put # as the link in our examples. It should be a real URL to a specific page.

 

Button Sizes

Bootstrap provides four button sizes:

 

The classes that define the different sizes are:

• .btn-lg
• .btn-md
• .btn-sm
• .btn-xs

Block level Buttons

A block level button spans the entire width of the parent element.

Add class .btn-block to create a block level button.

 

Active/Disabled Buttons

A button can be set to an active(appear pressed) or a disables(unclickable) state:

The class .active makes a button appear pressed,and the class .disabled makes a button unclickable

 

  <button type="button" class="btn btn-primary">Primary Button</button>

  <button type="button" class="btn btn-primary active">Active Primary</button>

  <button type="button" class="btn btn-primary disabled">Disabled Primary</button>