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HTML5/CSS3实现五彩进度条应用

今天要介绍的是一款基于HTML5和CSS3的进度条应用,这款进度条是静态的,仅提供进度条的五彩外观。当然你可以在CSS中动态设置进度值来让其变得动态,一个很好的实现方式是利用jQuery动态改变CSS中的进度值,让进度条实时动起来。具体效果大家可以看演示。

css3-progress-5-colors

你也可以在这里查看在线演示

接下来我们来分析一下这款进度条的源代码以及实现思路,代码主要由HTML和CSS组成,如果你需要动态改变进度值,也可以自己添加Javascript代码,也是比较简单的。

HTML代码:

<section class="container">    <div class="progress">      <span style="width: 20%;"><span>20%</span></span>    </div>    <div class="progress">      <span class="green" style="width: 40%;"><span>40%</span></span>    </div>    <div class="progress">      <span class="orange" style="width: 60%;"><span>60%</span></span>    </div>    <div class="progress">      <span class="red" style="width: 80%;"><span>80%</span></span>    </div>    <div class="progress">      <span class="blue" style="width: 100%;"><span>100%</span></span>    </div>  </section>

从HTML结构中我们可以看出,类名为progress的div是整个进度条的父容器,里面的span则是当前进度,通过width来定义不同的进度值,同时定义不同的颜色类,比如orange,以便待会在CSS中进行样式渲染。

CSS代码:

.progress {  height: 20px;  background: #ebebeb;  border-left: 1px solid transparent;  border-right: 1px solid transparent;  border-radius: 10px;}.progress > span {  position: relative;  float: left;  margin: 0 -1px;  min-width: 30px;  height: 18px;  line-height: 16px;  text-align: right;  background: #cccccc;  border: 1px solid;  border-color: #bfbfbf #b3b3b3 #9e9e9e;  border-radius: 10px;  background-image: -webkit-linear-gradient(top, #f0f0f0 0%, #dbdbdb 70%, #cccccc 100%);  background-image: -moz-linear-gradient(top, #f0f0f0 0%, #dbdbdb 70%, #cccccc 100%);  background-image: -o-linear-gradient(top, #f0f0f0 0%, #dbdbdb 70%, #cccccc 100%);  background-image: linear-gradient(to bottom, #f0f0f0 0%, #dbdbdb 70%, #cccccc 100%);  -webkit-box-shadow: inset 0 1px rgba(255, 255, 255, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);  box-shadow: inset 0 1px rgba(255, 255, 255, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);}.progress > span > span {  padding: 0 8px;  font-size: 11px;  font-weight: bold;  color: #404040;  color: rgba(0, 0, 0, 0.7);  text-shadow: 0 1px rgba(255, 255, 255, 0.4);}.progress > span:before {  content: ‘‘;  position: absolute;  top: 0;  bottom: 0;  left: 0;  right: 0;  z-index: 1;  height: 18px;  background: url("../img/progress.png") 0 0 repeat-x;  border-radius: 10px;}.progress .green {  background: #85c440;  border-color: #78b337 #6ba031 #568128;  background-image: -webkit-linear-gradient(top, #b7dc8e 0%, #99ce5f 70%, #85c440 100%);  background-image: -moz-linear-gradient(top, #b7dc8e 0%, #99ce5f 70%, #85c440 100%);  background-image: -o-linear-gradient(top, #b7dc8e 0%, #99ce5f 70%, #85c440 100%);  background-image: linear-gradient(to bottom, #b7dc8e 0%, #99ce5f 70%, #85c440 100%);}.progress .red {  background: #db3a27;  border-color: #c73321 #b12d1e #8e2418;  background-image: -webkit-linear-gradient(top, #ea8a7e 0%, #e15a4a 70%, #db3a27 100%);  background-image: -moz-linear-gradient(top, #ea8a7e 0%, #e15a4a 70%, #db3a27 100%);  background-image: -o-linear-gradient(top, #ea8a7e 0%, #e15a4a 70%, #db3a27 100%);  background-image: linear-gradient(to bottom, #ea8a7e 0%, #e15a4a 70%, #db3a27 100%);}.progress .orange {  background: #f2b63c;  border-color: #f0ad24 #eba310 #c5880d;  background-image: -webkit-linear-gradient(top, #f8da9c 0%, #f5c462 70%, #f2b63c 100%);  background-image: -moz-linear-gradient(top, #f8da9c 0%, #f5c462 70%, #f2b63c 100%);  background-image: -o-linear-gradient(top, #f8da9c 0%, #f5c462 70%, #f2b63c 100%);  background-image: linear-gradient(to bottom, #f8da9c 0%, #f5c462 70%, #f2b63c 100%);}.progress .blue {  background: #5aaadb;  border-color: #459fd6 #3094d2 #277db2;  background-image: -webkit-linear-gradient(top, #aed5ed 0%, #7bbbe2 70%, #5aaadb 100%);  background-image: -moz-linear-gradient(top, #aed5ed 0%, #7bbbe2 70%, #5aaadb 100%);  background-image: -o-linear-gradient(top, #aed5ed 0%, #7bbbe2 70%, #5aaadb 100%);  background-image: linear-gradient(to bottom, #aed5ed 0%, #7bbbe2 70%, #5aaadb 100%);}

这里我们对前面HTML中定义的不同颜色的进度条进行了CSS定义,设置背景颜色、边框颜色以及利用linear-gradient属性设置线性渐变的背景。看起来CSS代码非常简单,也没有太多CSS3的东西。以上只是核心代码,你也可以自己下载完整的代码研究。源码下载>>