进度条

通过这些简单、灵活的进度条，为当前工作流程或动作提供实时反馈。

跨浏览器兼容性

进度条组件使用了 CSS3 的 transition 和 animation 属性来完成一些特效。这些特性在 Internet Explorer 9 或以下版本中、Firefox 的老版本中没有被支持。Opera 12 不支持 animation 属性。

基本实例

默认样式的进度条

<div class="progress">
  <div class="progress-bar" role="progressbar" aria-valuenow="60" aria-valuemin="0" aria-valuemax="100" style="width: 60%;">
    <span class="sr-only">60% Complete</span>
  </div>
</div>

带有提示标签的进度条

将设置了 .sr-only 类的 <span> 标签从进度条组件中移除类，从而让当前进度显示出来。

<div class="progress">
  <div class="progress-bar" role="progressbar" aria-valuenow="60" aria-valuemin="0" aria-valuemax="100" style="width: 60%;">
    60%
  </div>
</div>

在展示很低的百分比时，如果需要让文本提示能够清晰可见，可以为进度条设置 min-width 属性。

<div class="progress">
  <div class="progress-bar" role="progressbar" aria-valuenow="0" aria-valuemin="0" aria-valuemax="100" style="min-width: 2em;">
    0%
  </div>
</div>
<div class="progress">
  <div class="progress-bar" role="progressbar" aria-valuenow="2" aria-valuemin="0" aria-valuemax="100" style="min-width: 2em; width: 2%;">
    2%
  </div>
</div>

根据情境变化效果

进度条组件使用与按钮和警告框相同的类，根据不同情境展现相应的效果。

<div class="progress">
  <div class="progress-bar progress-bar-success" role="progressbar" aria-valuenow="40" aria-valuemin="0" aria-valuemax="100" style="width: 40%">
    <span class="sr-only">40% Complete (success)</span>
  </div>
</div>
<div class="progress">
  <div class="progress-bar progress-bar-info" role="progressbar" aria-valuenow="20" aria-valuemin="0" aria-valuemax="100" style="width: 20%">
    <span class="sr-only">20% Complete</span>
  </div>
</div>
<div class="progress">
  <div class="progress-bar progress-bar-warning" role="progressbar" aria-valuenow="60" aria-valuemin="0" aria-valuemax="100" style="width: 60%">
    <span class="sr-only">60% Complete (warning)</span>
  </div>
</div>
<div class="progress">
  <div class="progress-bar progress-bar-danger" role="progressbar" aria-valuenow="80" aria-valuemin="0" aria-valuemax="100" style="width: 80%">
    <span class="sr-only">80% Complete (danger)</span>
  </div>
</div>

条纹效果

通过渐变可以为进度条创建条纹效果，IE9 及更低版本不支持。

<div class="progress">
  <div class="progress-bar progress-bar-success progress-bar-striped" role="progressbar" aria-valuenow="40" aria-valuemin="0" aria-valuemax="100" style="width: 40%">
    <span class="sr-only">40% Complete (success)</span>
  </div>
</div>
<div class="progress">
  <div class="progress-bar progress-bar-info progress-bar-striped" role="progressbar" aria-valuenow="20" aria-valuemin="0" aria-valuemax="100" style="width: 20%">
    <span class="sr-only">20% Complete</span>
  </div>
</div>
<div class="progress">
  <div class="progress-bar progress-bar-warning progress-bar-striped" role="progressbar" aria-valuenow="60" aria-valuemin="0" aria-valuemax="100" style="width: 60%">
    <span class="sr-only">60% Complete (warning)</span>
  </div>
</div>
<div class="progress">
  <div class="progress-bar progress-bar-danger progress-bar-striped" role="progressbar" aria-valuenow="80" aria-valuemin="0" aria-valuemax="100" style="width: 80%">
    <span class="sr-only">80% Complete (danger)</span>
  </div>
</div>

动画效果

为 .progress-bar-striped 添加 .active 类，使其呈现出由右向左运动的动画效果。IE9 及更低版本的浏览器不支持。

<div class="progress">
  <div class="progress-bar progress-bar-striped active" role="progressbar" aria-valuenow="45" aria-valuemin="0" aria-valuemax="100" style="width: 45%">
    <span class="sr-only">45% Complete</span>
  </div>
</div>

堆叠效果

把多个进度条放入同一个 .progress 中，使它们呈现堆叠的效果。

<div class="progress">
  <div class="progress-bar progress-bar-success" style="width: 35%">
    <span class="sr-only">35% Complete (success)</span>
  </div>
  <div class="progress-bar progress-bar-warning progress-bar-striped" style="width: 20%">
    <span class="sr-only">20% Complete (warning)</span>
  </div>
  <div class="progress-bar progress-bar-danger" style="width: 10%">
    <span class="sr-only">10% Complete (danger)</span>
  </div>
</div>