标签：style blog http color java os io for
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。
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。
<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。
.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>>
HTML5/CSS3实现五彩进度条应用,布布扣,bubuko.com
标签：style blog http color java os io for
原文地址：http://www.cnblogs.com/html5tricks/p/3913829.html
