icon
icon(name, class = NULL, lib = "font-awesome")Arguments
| name | Name of icon. Icons are drawn from the Font Awesome and Glyphicons" libraries. Note that the "fa-" and "glyphicon-" prefixes should not be used in icon names (i.e. the "fa-calendar" icon should be referred to as "calendar") | 
|---|---|
| class | Additional classes to customize the style of the icon (see the usage examples for details on supported styles). | 
| lib | Icon library to use ("font-awesome" or "glyphicon") | 
Value
- 
An icon element
Description
Create an icon for use within a page. Icons can appear on their own, inside
of a button, or as an icon for a tabPanel within a
navbarPage.
Examples
<i class="fa fa-calendar"></i>
<i class="fa fa-calendar fa-3x"></i>
<i class="glyphicon glyphicon-cog"></i>
<div>
  <button type="submit" class="btn btn-primary">
    <i class="fa fa-refresh"></i>
    Update View
  </button>
</div>
navbarPage("App Title",
  tabPanel("Plot", icon = icon("bar-chart-o")),
  tabPanel("Summary", icon = icon("list-alt")),
  tabPanel("Table", icon = icon("table"))
)
<nav class="navbar navbar-default navbar-static-top" role="navigation">
  <div class="container">
    <div class="navbar-header">
      <span class="navbar-brand">App Title</span>
    </div>
    <ul class="nav navbar-nav">
      <li class="active">
        <a href="#tab-1126-1" data-toggle="tab" data-value="Plot">
          <i class=" fa fa-bar-chart-o fa-fw"></i>
          Plot
        </a>
      </li>
      <li>
        <a href="#tab-1126-2" data-toggle="tab" data-value="Summary">
          <i class=" fa fa-list-alt fa-fw"></i>
          Summary
        </a>
      </li>
      <li>
        <a href="#tab-1126-3" data-toggle="tab" data-value="Table">
          <i class=" fa fa-table fa-fw"></i>
          Table
        </a>
      </li>
    </ul>
  </div>
</nav>
<div class="container-fluid">
  <div class="tab-content">
    <div class="tab-pane active" data-value="Plot" data-icon-class="fa fa-bar-chart-o" id="tab-1126-1"></div>
    <div class="tab-pane" data-value="Summary" data-icon-class="fa fa-list-alt" id="tab-1126-2"></div>
    <div class="tab-pane" data-value="Table" data-icon-class="fa fa-table" id="tab-1126-3"></div>
  </div>
</div>
See also
For lists of available icons, see http://fontawesome.io/icons/ and http://getbootstrap.com/components/#glyphicons.