Bootstrap 进度条

本章将讲解 Bootstrap 进度条。在本教程中，您将看到如何使用 Bootstrap 创建加载、重定向或动作状态的进度条。

Bootstrap 进度条使用 CSS3 过渡和动画来获得该效果。Internet Explorer 9 及之前的版本和旧版的 Firefox 不支持该特性，Opera 12 不支持动画。

默认的进度条

创建一个基本的进度条的步骤如下：

• 添加一个带有 class .progress 的 <div>。
• 接着，在上面的 <div> 内，添加一个带有 class .progress-bar 的空的 <div>。
• 添加一个带有百分比表示的宽度的 style 属性，例如 style=”width: 60%”; 表示进度条在 60% 的位置。

让我们看看下面的实例：

实例

<
div

class
=
“
progress
“
>

<
div

class
=
“
progress-bar
“

role
=
“
progressbar
“

aria-valuenow
=
“
60
“

aria-valuemin
=
“
0
“

aria-valuemax
=
“
100
“

style
=
“
width: 40%;
“
>

<
span

class
=
“
sr-only
“
>
40% 完成
</
span
>

</
div
>

</
div
>


尝试一下 »

结果如下所示：

交替的进度条

创建不同样式的进度条的步骤如下：

• 添加一个带有 class .progress 的 <div>。
• 接着，在上面的 <div> 内，添加一个带有 class .progress-bar 和 class progress-bar-* 的空的 <div>。其中，* 可以是 success、info、warning、danger。
• 添加一个带有百分比表示的宽度的 style 属性，例如 style=”60%”; 表示进度条在 60% 的位置。

让我们看看下面的实例：

实例

<
div

class
=
“
progress
“
>

<
div

class
=
“
progress-bar progress-bar-success
“

role
=
“
progressbar
“

aria-valuenow
=
“
60
“

aria-valuemin
=
“
0
“

aria-valuemax
=
“
100
“

style
=
“
width: 90%;
“
>

<
span

class
=
“
sr-only
“
>
90% 完成（成功）
</
span
>

</
div
>

</
div
>

<
div

class
=
“
progress
“
>

<
div

class
=
“
progress-bar progress-bar-info
“

role
=
“
progressbar
“

aria-valuenow
=
“
60
“

aria-valuemin
=
“
0
“

aria-valuemax
=
“
100
“

style
=
“
width: 30%;
“
>

<
span

class
=
“
sr-only
“
>
30% 完成（信息）
</
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: 20%;
“
>

<
span

class
=
“
sr-only
“
>
20% 完成（警告）
</
span
>

</
div
>

</
div
>

<
div

class
=
“
progress
“
>

<
div

class
=
“
progress-bar progress-bar-danger
“

role
=
“
progressbar
“

aria-valuenow
=
“
60
“

aria-valuemin
=
“
0
“

aria-valuemax
=
“
100
“

style
=
“
width: 10%;
“
>

<
span

class
=
“
sr-only
“
>
10% 完成（危险）
</
span
>

</
div
>

</
div
>


尝试一下 »

结果如下所示：

条纹的进度条

创建一个条纹的进度条的步骤如下：

• 添加一个带有 class .progress 和 .progress-striped 的 <div>。
• 接着，在上面的 <div> 内，添加一个带有 class .progress-bar 和 class progress-bar-* 的空的 <div>。其中，* 可以是 success、info、warning、danger。
• 添加一个带有百分比表示的宽度的 style 属性，例如 style=”60%”; 表示进度条在 60% 的位置。

让我们看看下面的实例：

实例

<
div

class
=
“
progress progress-striped
“
>

<
div

class
=
“
progress-bar progress-bar-success
“

role
=
“
progressbar
“

aria-valuenow
=
“
60
“

aria-valuemin
=
“
0
“

aria-valuemax
=
“
100
“

style
=
“
width: 90%;
“
>

<
span

class
=
“
sr-only
“
>
90% 完成（成功）
</
span
>

</
div
>

</
div
>

<
div

class
=
“
progress progress-striped
“
>

<
div

class
=
“
progress-bar progress-bar-info
“

role
=
“
progressbar
“

aria-valuenow
=
“
60
“

aria-valuemin
=
“
0
“

aria-valuemax
=
“
100
“

style
=
“
width: 30%;
“
>

<
span

class
=
“
sr-only
“
>
30% 完成（信息）
</
span
>

</
div
>

</
div
>

<
div

class
=
“
progress progress-striped
“
>

<
div

class
=
“
progress-bar progress-bar-warning
“

role
=
“
progressbar
“

aria-valuenow
=
“
60
“

aria-valuemin
=
“
0
“

aria-valuemax
=
“
100
“

style
=
“
width: 20%;
“
>

<
span

class
=
“
sr-only
“
>
20% 完成（警告）
</
span
>

</
div
>

</
div
>

<
div

class
=
“
progress progress-striped
“
>

<
div

class
=
“
progress-bar progress-bar-danger
“

role
=
“
progressbar
“

aria-valuenow
=
“
60
“

aria-valuemin
=
“
0
“

aria-valuemax
=
“
100
“

style
=
“
width: 10%;
“
>

<
span

class
=
“
sr-only
“
>
10% 完成（危险）
</
span
>

</
div
>

</
div
>


尝试一下 »

结果如下所示：

动画的进度条

创建一个动画的进度条的步骤如下：

• 添加一个带有 class .progress 和 .progress-striped 的 <div>。同时添加 class .active。
• 接着，在上面的 <div> 内，添加一个带有 class .progress-bar 的空的 <div>。
• 添加一个带有百分比表示的宽度的 style 属性，例如 style=”60%”; 表示进度条在 60% 的位置。

这将会使条纹具有从右向左的运动感。

让我们看看下面的实例：

实例

<
div

class
=
“
progress progress-striped active
“
>

<
div

class
=
“
progress-bar progress-bar-success
“

role
=
“
progressbar
“

aria-valuenow
=
“
60
“

aria-valuemin
=
“
0
“

aria-valuemax
=
“
100
“

style
=
“
width: 40%;
“
>

<
span

class
=
“
sr-only
“
>
40% 完成
</
span
>

</
div
>

</
div
>


尝试一下 »

结果如下所示：

堆叠的进度条

您甚至可以堆叠多个进度条。把多个进度条放在相同的 .progress 中即可实现堆叠，如下面的实例所示：

实例

<
div

class
=
“
progress
“
>

<
div

class
=
“
progress-bar progress-bar-success
“

role
=
“
progressbar
“

aria-valuenow
=
“
60
“

aria-valuemin
=
“
0
“

aria-valuemax
=
“
100
“

style
=
“
width: 40%;
“
>

<
span

class
=
“
sr-only
“
>
40% 完成
</
span
>

</
div
>

<
div

class
=
“
progress-bar progress-bar-info
“

role
=
“
progressbar
“

aria-valuenow
=
“
60
“

aria-valuemin
=
“
0
“

aria-valuemax
=
“
100
“

style
=
“
width: 30%;
“
>

<
span

class
=
“
sr-only
“
>
30% 完成（信息）
</
span
>

</
div
>

<
div

class
=
“
progress-bar progress-bar-warning
“

role
=
“
progressbar
“

aria-valuenow
=
“
60
“

aria-valuemin
=
“
0
“

aria-valuemax
=
“
100
“

style
=
“
width: 20%;
“
>

<
span

class
=
“
sr-only
“
>
20% 完成（警告）
</
span
>

</
div
>

</
div
>


尝试一下 »

结果如下所示：