在网页中,进度条的效果并不少见,如:平分系统、加载状态等,进度条组件使用了css3的transition和animation属性来完成一些特效,这些特效在IE9及IE9以下版本、Firefox的老版本中并不支持,Opera 12 不支持 animation 属性。
进度条和其他独立组件一样,开发者可以根据自己的需要选择对应的版本:
LESS: progress-bars.less
SASS: _progress-bars.scss
基础进度条
实现原理:
需要两个容器,外容器使用类名.progress,子容器使用类名.progress-bar;其中.progress用来设置进度条容器的背景色,容器的高度,间距等;而.progress-bar设置进度方向,进度条的背景色和过度效果;下面是css源码:
<span style="color: #800000">.progress </span>{<span style="color: #ff0000"> height</span>:<span style="color: #0000ff"> 20px</span>;<span style="color: #ff0000"> margin-bottom</span>:<span style="color: #0000ff"> 20px</span>;<span style="color: #ff0000"> overflow</span>:<span style="color: #0000ff"> hidden</span>;<span style="color: #ff0000"> background-color</span>:<span style="color: #0000ff"> #f5f5f5</span>;<span style="color: #ff0000"> border-radius</span>:<span style="color: #0000ff"> 4px</span>;<span style="color: #ff0000"> -webkit-box-shadow</span>:<span style="color: #0000ff"> inset 0 1px 2px rgba(0, 0, 0, .1)</span>;<span style="color: #ff0000"> box-shadow</span>:<span style="color: #0000ff"> inset 0 1px 2px rgba(0, 0, 0, .1)</span>; }
<span style="color: #800000">.progress-bar </span>{<span style="color: #ff0000"> float</span>:<span style="color: #0000ff"> left</span>;<span style="color: #ff0000"> width</span>:<span style="color: #0000ff"> 0</span>;<span style="color: #ff0000"> height</span>:<span style="color: #0000ff"> 100%</span>;<span style="color: #ff0000"> font-size</span>:<span style="color: #0000ff"> 12px</span>;<span style="color: #ff0000"> line-height</span>:<span style="color: #0000ff"> 20px</span>;<span style="color: #ff0000"> color</span>:<span style="color: #0000ff"> #fff</span>;<span style="color: #ff0000"> text-align</span>:<span style="color: #0000ff"> center</span>;<span style="color: #ff0000"> background-color</span>:<span style="color: #0000ff"> #428bca</span>;<span style="color: #ff0000"> -webkit-box-shadow</span>:<span style="color: #0000ff"> inset 0 -1px 0 rgba(0, 0, 0, .15)</span>;<span style="color: #ff0000"> box-shadow</span>:<span style="color: #0000ff"> inset 0 -1px 0 rgba(0, 0, 0, .15)</span>;<span style="color: #ff0000"> -webkit-transition</span>:<span style="color: #0000ff"> width .6s ease</span>;<span style="color: #ff0000"> transition</span>:<span style="color: #0000ff"> width .6s ease</span>; }
例子:
<span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress"</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress-bar"</span><span style="color: #ff0000"> style</span><span style="color: #0000ff">="width:30%;"</span><span style="color: #ff0000"> role</span><span style="color: #0000ff">="progressbar"</span><span style="color: #ff0000"> aria-valuenow</span><span style="color: #0000ff">="30"</span><span style="color: #ff0000"> aria-valuemin</span><span style="color: #0000ff">="0"</span><span style="color: #ff0000"> aria-valuemax</span><span style="color: #0000ff">="100"</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">span </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="sr-only"</span><span style="color: #0000ff">>3</span>0%<span style="color: #0000ff"></span><span style="color: #800000">span</span><span style="color: #0000ff">></span> <span style="color: #0000ff"></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"></span><span style="color: #800000">div</span><span style="color: #0000ff">></span></span></span></span>

role属性作用:告诉搜索引擎这个div的作用是进度条;
aria-valuenow=”30”属性作用:当前进度条的进度为40%;
aria-valuemin=”0”属性作用:进度条的最小值为0%;
aria-valuemax=”100”属性作用:进度条的最大值为100%;
可以将设置了.sr-only类的标签从进度条组件中移除,而让当前进度显示出来;
<span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress"</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress-bar"</span><span style="color: #ff0000"> style</span><span style="color: #0000ff">="width:40%;"</span><span style="color: #ff0000"> role</span><span style="color: #0000ff">="progressbar"</span><span style="color: #ff0000"> aria-valuenow</span><span style="color: #0000ff">="40"</span><span style="color: #ff0000"> aria-valuemin</span><span style="color: #0000ff">="0"</span><span style="color: #ff0000"> aria-valuemax</span><span style="color: #0000ff">="100"</span> <span style="color: #0000ff">></span>40%<span style="color: #0000ff"></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"></span><span style="color: #800000">div</span><span style="color: #0000ff">></span></span></span>

彩色进度条
彩色进度条和警告进度条一样,为了能给用户一个更好的体验,也根据不同的状态配置了不同的进度条颜色,主要包括以下四种:
progress-bar-info:表示信息进度条,蓝色
progress-bar-success:表示成功进度条,绿色
progress-bar-warning:表示警告进度条,黄色
progress-bar-danger:表示错误进度条,红色
css源码:
<span style="color: #800000">.progress-bar-success </span>{<span style="color: #ff0000"> background-color</span>:<span style="color: #0000ff"> #5cb85c</span>; }<span style="color: #800000"> .progress-bar-info </span>{<span style="color: #ff0000"> background-color</span>:<span style="color: #0000ff"> #5bc0de</span>; }<span style="color: #800000"> .progress-bar-warning </span>{<span style="color: #ff0000"> background-color</span>:<span style="color: #0000ff"> #f0ad4e</span>; }<span style="color: #800000"> .progress-bar-danger </span>{<span style="color: #ff0000"> background-color</span>:<span style="color: #0000ff"> #d9534f</span>; }
使用方法:
只需要在基础进度条上增加对应的类名即可
例子:
<span style="color: #0000ff"><span style="color: #800000">h1</span><span style="color: #0000ff">></span>彩色进度条<span style="color: #0000ff"></span><span style="color: #800000">h1</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress"</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress-bar progress-bar-success"</span><span style="color: #ff0000"> style</span><span style="color: #0000ff">="width:25%;"</span><span style="color: #ff0000"> role</span><span style="color: #0000ff">="progressbar"</span><span style="color: #ff0000"> aria-valuenow</span><span style="color: #0000ff">="25"</span><span style="color: #ff0000"> aria-valuemin</span><span style="color: #0000ff">="0"</span><span style="color: #ff0000"> aria-valuemax</span><span style="color: #0000ff">="100"</span><span style="color: #0000ff">></span>25%<span style="color: #0000ff"></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress"</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress-bar progress-bar-info"</span><span style="color: #ff0000"> style</span><span style="color: #0000ff">="width:40%;"</span><span style="color: #ff0000"> role</span><span style="color: #0000ff">="progressbar"</span><span style="color: #ff0000"> aria-valuenow</span><span style="color: #0000ff">="40"</span><span style="color: #ff0000"> aria-valuemax</span><span style="color: #0000ff">="100"</span><span style="color: #ff0000"> aria-valuemin</span><span style="color: #0000ff">="0"</span><span style="color: #0000ff">></span>40%<span style="color: #0000ff"></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress"</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress-bar progress-bar-warning"</span><span style="color: #ff0000"> style</span><span style="color: #0000ff">="width:80%;"</span><span style="color: #ff0000"> role</span><span style="color: #0000ff">="progressbar"</span><span style="color: #ff0000"> aria-valuenow</span><span style="color: #0000ff">="25"</span><span style="color: #ff0000"> aria-valuemin</span><span style="color: #0000ff">="0"</span><span style="color: #ff0000"> aria-valuemax</span><span style="color: #0000ff">="100"</span><span style="color: #0000ff">></span>80%<span style="color: #0000ff"></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress"</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress-bar progress-bar-danger"</span><span style="color: #ff0000"> style</span><span style="color: #0000ff">="width:60%;"</span><span style="color: #ff0000"> role</span><span style="color: #0000ff">="progressbar"</span><span style="color: #ff0000"> aria-valuenow</span><span style="color: #0000ff">="40"</span><span style="color: #ff0000"> aria-valuemax</span><span style="color: #0000ff">="100"</span><span style="color: #ff0000"> aria-valuemin</span><span style="color: #0000ff">="0"</span><span style="color: #0000ff">></span>60%<span style="color: #0000ff"></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"></span><span style="color: #800000">div</span><span style="color: #0000ff">></span></span></span></span></span></span></span></span></span></span>
效果如下:
条纹进度条
条纹进度条采用css3的线性渐变来实现,并未借助任何图片,使用条纹进度条只需在进度条的容器.progress基础上追加类名”progress-striped”,如果要进度条纹像彩色进度一样,具有彩色效果,只需在进度条上增加相应得颜色类名
下面是.progress-striped样式源码:
<span style="color: #800000">.progress-striped .progress-bar </span>{<span style="color: #ff0000"> background-image</span>:<span style="color: #0000ff"> -webkit-linear-gradient(45deg, rgba(255, 255, 255, .15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, .15) 50%, rgba(255, 255, 255, .15) 75%, transparent 75%, transparent)</span>;<span style="color: #ff0000"> background-image</span>:<span style="color: #0000ff">linear-gradient(45deg, rgba(255, 255, 255, .15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, .15) 50%, rgba(255, 255, 255, .15) 75%, transparent 75%, transparent)</span>;<span style="color: #ff0000"> background-size</span>:<span style="color: #0000ff"> 40px 40px</span>; }
条纹进度对应的每种状态也有不同的颜色
<span style="color: #800000">.progress-striped .progress-bar-success </span>{<span style="color: #ff0000"> background-image</span>:<span style="color: #0000ff"> -webkit-linear-gradient(45deg, rgba(255, 255, 255, .15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, .15) 50%, rgba(255, 255, 255, .15) 75%, transparent 75%, transparent)</span>;<span style="color: #ff0000"> background-image</span>:<span style="color: #0000ff">linear-gradient(45deg, rgba(255, 255, 255, .15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, .15) 50%, rgba(255, 255, 255, .15) 75%, transparent 75%, transparent)</span>; }<span style="color: #800000"> .progress-striped .progress-bar-info </span>{<span style="color: #ff0000"> background-image</span>:<span style="color: #0000ff"> -webkit-linear-gradient(45deg, rgba(255, 255, 255, .15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, .15) 50%, rgba(255, 255, 255, .15) 75%, transparent 75%, transparent)</span>;<span style="color: #ff0000"> background-image</span>:<span style="color: #0000ff">linear-gradient(45deg, rgba(255, 255, 255, .15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, .15) 50%, rgba(255, 255, 255, .15) 75%, transparent 75%, transparent)</span>; }<span style="color: #800000"> .progress-striped .progress-bar-warning </span>{<span style="color: #ff0000"> background-image</span>:<span style="color: #0000ff"> -webkit-linear-gradient(45deg, rgba(255, 255, 255, .15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, .15) 50%, rgba(255, 255, 255, .15) 75%, transparent 75%, transparent)</span>;<span style="color: #ff0000"> background-image</span>:<span style="color: #0000ff">linear-gradient(45deg, rgba(255, 255, 255, .15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, .15) 50%, rgba(255, 255, 255, .15) 75%, transparent 75%, transparent)</span>; }<span style="color: #800000"> .progress-striped .progress-bar-danger </span>{<span style="color: #ff0000"> background-image</span>:<span style="color: #0000ff"> -webkit-linear-gradient(45deg, rgba(255, 255, 255, .15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, .15) 50%, rgba(255, 255, 255, .15) 75%, transparent 75%, transparent)</span>;<span style="color: #ff0000"> background-image</span>:<span style="color: #0000ff">linear-gradient(45deg, rgba(255, 255, 255, .15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, .15) 50%, rgba(255, 255, 255, .15) 75%, transparent 75%, transparent)</span>; }
下面来看看条纹进度条的运用:
<span style="color: #0000ff"><span style="color: #800000">h1</span><span style="color: #0000ff">></span>条纹进度条<span style="color: #0000ff"></span><span style="color: #800000">h1</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress progress-striped"</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress-bar progress-bar-success"</span><span style="color: #ff0000"> style</span><span style="color: #0000ff">="width:25%;"</span><span style="color: #ff0000"> role</span><span style="color: #0000ff">="progressbar"</span><span style="color: #ff0000"> aria-valuenow</span><span style="color: #0000ff">="25"</span><span style="color: #ff0000"> aria-valuemin</span><span style="color: #0000ff">="0"</span><span style="color: #ff0000"> aria-valuemax</span><span style="color: #0000ff">="100"</span><span style="color: #0000ff">></span>25%<span style="color: #0000ff"></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress progress-striped"</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress-bar progress-bar-info"</span><span style="color: #ff0000"> style</span><span style="color: #0000ff">="width:40%;"</span><span style="color: #ff0000"> role</span><span style="color: #0000ff">="progressbar"</span><span style="color: #ff0000"> aria-valuenow</span><span style="color: #0000ff">="40"</span><span style="color: #ff0000"> aria-valuemax</span><span style="color: #0000ff">="100"</span><span style="color: #ff0000"> aria-valuemin</span><span style="color: #0000ff">="0"</span><span style="color: #0000ff">></span>40%<span style="color: #0000ff"></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress progress-striped"</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress-bar progress-bar-warning"</span><span style="color: #ff0000"> style</span><span style="color: #0000ff">="width:80%;"</span><span style="color: #ff0000"> role</span><span style="color: #0000ff">="progressbar"</span><span style="color: #ff0000"> aria-valuenow</span><span style="color: #0000ff">="25"</span><span style="color: #ff0000"> aria-valuemin</span><span style="color: #0000ff">="0"</span><span style="color: #ff0000"> aria-valuemax</span><span style="color: #0000ff">="100"</span><span style="color: #0000ff">></span>80%<span style="color: #0000ff"></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress progress-striped"</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress-bar progress-bar-danger"</span><span style="color: #ff0000"> style</span><span style="color: #0000ff">="width:60%;"</span><span style="color: #ff0000"> role</span><span style="color: #0000ff">="progressbar"</span><span style="color: #ff0000"> aria-valuenow</span><span style="color: #0000ff">="40"</span><span style="color: #ff0000"> aria-valuemax</span><span style="color: #0000ff">="100"</span><span style="color: #ff0000"> aria-valuemin</span><span style="color: #0000ff">="0"</span><span style="color: #0000ff">></span>60%<span style="color: #0000ff"></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"></span><span style="color: #800000">div</span><span style="color: #0000ff">></span></span></span></span></span></span></span></span></span></span>

动态条纹进度条
在进度条.progress 、.progress-striped两个类的基础上在加入类名.active就能实现动态条纹进度条。
其实现原理主要是通过css3的animation来完成。首先通过@keyframes创建了一个progress-bar-stripes的动画,这个动画主要做了一件事,就是改变背景图像的位置,也就是 background-position的值。因为条纹进度条是通过CSS3的线性渐变来制作的,而linear-gradient实现的正是对应背景中的背景图片
下面是css源码:
<span style="color: #800000">@-webkit-keyframes progress-bar-stripes </span>{<span style="color: #ff0000"> from { background-position</span>:<span style="color: #0000ff"> 40px 0</span>; }<span style="color: #800000"> to </span>{<span style="color: #ff0000"> background-position</span>:<span style="color: #0000ff"> 0 0</span>; }<span style="color: #800000"> } @keyframes progress-bar-stripes </span>{<span style="color: #ff0000"> from { background-position</span>:<span style="color: #0000ff"> 40px 0</span>; }<span style="color: #800000"> to </span>{<span style="color: #ff0000"> background-position</span>:<span style="color: #0000ff"> 0 0</span>; }<span style="color: #800000"> }</span>
@keyframes仅仅是创建了一个动画效果,如果要让进度条真正的动起来,我们需要通过一定的方式调用@keyframes创建的动画 “progress-bar-stripes”,并且通过一个事件触发动画生效。在Bootstrap框架中,通过给进度条容器“progress”添加一个类名“active”,并让文档加载完成就触“progress-bar-stripes”动画生效
调用动画对应的样式代码如下:
<span style="color: #800000">.progress.active .progress-bar </span>{<span style="color: #ff0000"> -webkit-animation</span>:<span style="color: #0000ff"> progress-bar-stripes 2s linear infinite</span>;<span style="color: #ff0000"> animation</span>:<span style="color: #0000ff"> progress-bar-stripes 2s linear infinite</span>; }
例子:
<span style="color: #0000ff"><span style="color: #800000">h1</span><span style="color: #0000ff">></span>动态条纹进度条<span style="color: #0000ff"></span><span style="color: #800000">h1</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress progress-striped active"</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress-bar progress-bar-success"</span><span style="color: #ff0000"> style</span><span style="color: #0000ff">="width:25%;"</span><span style="color: #ff0000"> role</span><span style="color: #0000ff">="progressbar"</span><span style="color: #ff0000"> aria-valuenow</span><span style="color: #0000ff">="25"</span><span style="color: #ff0000"> aria-valuemin</span><span style="color: #0000ff">="0"</span><span style="color: #ff0000"> aria-valuemax</span><span style="color: #0000ff">="100"</span><span style="color: #0000ff">></span>25%<span style="color: #0000ff"></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress progress-striped active"</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress-bar progress-bar-info"</span><span style="color: #ff0000"> style</span><span style="color: #0000ff">="width:40%;"</span><span style="color: #ff0000"> role</span><span style="color: #0000ff">="progressbar"</span><span style="color: #ff0000"> aria-valuenow</span><span style="color: #0000ff">="40"</span><span style="color: #ff0000"> aria-valuemax</span><span style="color: #0000ff">="100"</span><span style="color: #ff0000"> aria-valuemin</span><span style="color: #0000ff">="0"</span><span style="color: #0000ff">></span>40%<span style="color: #0000ff"></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress progress-striped active"</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress-bar progress-bar-warning"</span><span style="color: #ff0000"> style</span><span style="color: #0000ff">="width:80%;"</span><span style="color: #ff0000"> role</span><span style="color: #0000ff">="progressbar"</span><span style="color: #ff0000"> aria-valuenow</span><span style="color: #0000ff">="25"</span><span style="color: #ff0000"> aria-valuemin</span><span style="color: #0000ff">="0"</span><span style="color: #ff0000"> aria-valuemax</span><span style="color: #0000ff">="100"</span><span style="color: #0000ff">></span>80%<span style="color: #0000ff"></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress progress-striped active"</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress-bar progress-bar-danger"</span><span style="color: #ff0000"> style</span><span style="color: #0000ff">="width:60%;"</span><span style="color: #ff0000"> role</span><span style="color: #0000ff">="progressbar"</span><span style="color: #ff0000"> aria-valuenow</span><span style="color: #0000ff">="40"</span><span style="color: #ff0000"> aria-valuemax</span><span style="color: #0000ff">="100"</span><span style="color: #ff0000"> aria-valuemin</span><span style="color: #0000ff">="0"</span><span style="color: #0000ff">></span>60%<span style="color: #0000ff"></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"></span><span style="color: #800000">div</span><span style="color: #0000ff">></span></span></span></span></span></span></span></span></span></span>
效果如下(由于是直接从网页上结果来的图,这里并看不到它的动态效果):
层叠进度条:
层叠进度可以将不容状态的进度条放在一起,按水平方式排列
例子:
<span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress"</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress-bar progress-bar-success"</span><span style="color: #ff0000"> style</span><span style="color: #0000ff">="width:20%"</span><span style="color: #0000ff">></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress-bar progress-bar-info"</span><span style="color: #ff0000"> style</span><span style="color: #0000ff">="width:10%"</span><span style="color: #0000ff">></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress-bar progress-bar-warning"</span><span style="color: #ff0000"> style</span><span style="color: #0000ff">="width:30%"</span><span style="color: #0000ff">></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress-bar progress-bar-danger"</span><span style="color: #ff0000"> style</span><span style="color: #0000ff">="width:15%"</span><span style="color: #0000ff">></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"></span><span style="color: #800000">div</span><span style="color: #0000ff">></span></span></span></span></span></span>

除了层叠彩色进度条之外,还可以层叠条纹进度条,或者说条纹进度条和彩色进度条混合层叠,仅需要在“progress”容器中添加对应的进度条,同样要注意,层叠的进度条之和不能大于100%。
下面来看一个例子:
<span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress"</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress-bar progress-bar-success"</span><span style="color: #ff0000"> style</span><span style="color: #0000ff">="width:20%"</span><span style="color: #0000ff">></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress-bar progress-bar-info"</span><span style="color: #ff0000"> style</span><span style="color: #0000ff">="width:20%"</span><span style="color: #0000ff">></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress-bar progress-bar-warning"</span><span style="color: #ff0000"> style</span><span style="color: #0000ff">="width:30%"</span><span style="color: #0000ff">></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress-bar progress-bar-danger"</span><span style="color: #ff0000"> style</span><span style="color: #0000ff">="width:15%"</span><span style="color: #0000ff">></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress"</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress-bar progress-bar-success progress-bar-striped"</span><span style="color: #ff0000"> style</span><span style="color: #0000ff">="width:20%"</span><span style="color: #0000ff">></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress-bar progress-bar-info progress-bar-striped"</span><span style="color: #ff0000"> style</span><span style="color: #0000ff">="width:20%"</span><span style="color: #0000ff">></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress-bar progress-bar-striped progress-bar-warning"</span><span style="color: #ff0000"> style</span><span style="color: #0000ff">="width:30%"</span><span style="color: #0000ff">></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress-bar progress-bar-danger progress-bar-striped"</span><span style="color: #ff0000"> style</span><span style="color: #0000ff">="width:15%"</span><span style="color: #0000ff">></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress"</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress-bar progress-bar-success"</span><span style="color: #ff0000"> style</span><span style="color: #0000ff">="width:20%"</span><span style="color: #0000ff">></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress-bar progress-bar-info progress-bar-striped"</span><span style="color: #ff0000"> style</span><span style="color: #0000ff">="width:20%"</span><span style="color: #0000ff">></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress-bar progress-bar-warning"</span><span style="color: #ff0000"> style</span><span style="color: #0000ff">="width:30%"</span><span style="color: #0000ff">></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="progress-bar progress-bar-danger progress-bar-striped"</span><span style="color: #ff0000"> style</span><span style="color: #0000ff">="width:15%"</span><span style="color: #0000ff">></span><span style="color: #800000">div</span><span style="color: #0000ff">></span> <span style="color: #0000ff"></span><span style="color: #800000">div</span><span style="color: #0000ff">></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>


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