灵阳星空
html5+css3进度条倒计时动画特效这个作品在今天上网找网络资源的时候无意中发现的，看到效果非常棒并且很实用，就第一时间把它整理出来与大家分享了，主要用到了html5、javascript和css3技术，用到了svg、circle、text。。。
把下面的代码另存为 .html 格式的文件即可。
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<!--[if IE 8]><style>.ie8 .alert-circle,.ie8 .alert-footer{display:none}.ie8 .alert-box{padding-top:75px}.ie8 .alert-sec-text{top:45px}</style><![endif]-->
<title>html5+css3进度条倒计时动画特效</title>
<style>
body {
margin: 0;
padding: 0;
background: #E6EAEB;
font-family: Arial, '微软雅黑', '宋体', sans-serif
}
.alert-box {
display: none;
position: relative;
margin: 96px auto 0;
padding: 180px 85px 22px;
border-radius: 10px 10px 0 0;
background: #FFF;
box-shadow: 5px 9px 17px rgba(102,102,102,0.75);
width: 286px;
color: #FFF;
text-align: center
}
.alert-box p {
margin: 0
}
.alert-circle {
position: absolute;
top: -50px;
left: 111px
}
.alert-sec-circle {
stroke-dashoffset: 0;
stroke-dasharray: 735;
transition: stroke-dashoffset 1s linear
}
.alert-sec-text {
position: absolute;
top: 11px;
left: 190px;
width: 76px;
color: #000;
font-size: 68px
}
.alert-sec-unit {
font-size: 34px
}
.alert-body {
margin: 35px 0
}
.alert-head {
color: #242424;
font-size: 28px
}
.alert-concent {
margin: 25px 0 14px;
color: #7B7B7B;
font-size: 18px
}
.alert-concent p {
line-height: 27px
}
.alert-btn {
display: block;
border-radius: 10px;
background-color: #4AB0F7;
height: 55px;
line-height: 55px;
width: 286px;
color: #FFF;
font-size: 20px;
text-decoration: none;
letter-spacing: 2px
}
.alert-btn:hover {
background-color: #6BC2FF
}
.alert-footer {
margin: 0 auto;
height: 42px;
width: 120px
}
.alert-footer-icon {
float: left
}
.alert-footer-text {
float: left;
border-left: 2px solid #EEE;
padding: 3px 0 0 5px;
height: 40px;
color: #0B85CC;
font-size: 12px;
text-align: left
}
.alert-footer-text p {
color: #7A7A7A;
font-size: 22px;
line-height: 18px
}
</style>
</head>
<body class="ie8">
<div id="js-alert-box" class="alert-box"> <svg class="alert-circle" width="234" height="234">
<circle cx="117" cy="117" r="108" fill="#FFF" stroke="#43AEFA" stroke-width="17"></circle>
<circle id="js-sec-circle" class="alert-sec-circle" cx="117" cy="117" r="108" fill="transparent" stroke="#F4F1F1" stroke-width="18" transform="rotate(-90 117 117)"></circle>
<text class="alert-sec-unit" x="82" y="172" fill="#BDBDBD">secs</text>
</svg>
<div id="js-sec-text" class="alert-sec-text"></div>
<div class="alert-body">
<div id="js-alert-head" class="alert-head"></div>
<div class="alert-concent">
<p>花个3分钟创建属于您的个人帐号</p>
<p>您将在我们的网站享受更多</p>
</div>
<a id="js-alert-btn" class="alert-btn" href="https://www.jsksky.com">立即前往注册</a> </div>
<div class="alert-footer clearfix"> <svg width="46px" height="42px" class="alert-footer-icon">
<circle fill-rule="evenodd" clip-rule="evenodd" fill="#7B7B7B" stroke="#DEDFE0" stroke-width="2" stroke-miterlimit="10" cx="21.917" cy="21.25" r="17"/>
<path fill="#FFF" d="M22.907,27.83h-1.98l0.3-2.92c-0.37-0.22-0.61-0.63-0.61-1.1c0-0.71,0.58-1.29,1.3-1.29s1.3,0.58,1.3,1.29 c0,0.47-0.24,0.88-0.61,1.1L22.907,27.83z M18.327,17.51c0-1.98,1.61-3.59,3.59-3.59s3.59,1.61,3.59,3.59v2.59h-7.18V17.51z M27.687,20.1v-2.59c0-3.18-2.59-5.76-5.77-5.76s-5.76,2.58-5.76,5.76v2.59h-1.24v10.65h14V20.1H27.687z"/>
<circle fill-rule="evenodd" clip-rule="evenodd" fill="#FEFEFE" cx="35.417" cy="10.75" r="6.5"/>
<polygon fill="#7B7B7B" stroke="#7B7B7B" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" points="35.417,12.16 32.797,9.03 31.917,10.07 35.417,14.25 42.917,5.29 42.037,4.25 "/>
</svg>
<div class="alert-footer-text">
<p>secure</p>
安全加密 </div>
</div>
</div>
<script>
function alertSet(e) {
document.getElementById("js-alert-box").style.display = "block",
document.getElementById("js-alert-head").innerHTML = e;
var t = 10,
n = document.getElementById("js-sec-circle");
document.getElementById("js-sec-text").innerHTML = t,
setInterval(function() {
if (0 == t){
location.href="https://www.jsksky.com";
}else {
t -= 1,
document.getElementById("js-sec-text").innerHTML = t;
var e = Math.round(t / 10 * 735);
n.style.strokeDashoffset = e - 735
}
},
970);
}
</script>
<center>
<span style="font-size:15px; font-weight:bold; text-align:center; line-height:25px; color:#000; width:100%">html5+css3进度条倒计时动画特效<br />
<a href="https://www.jsksky.com" target="_blank" style="color:#000">灵阳星空</a>网站出品（<a href="https://www.jsksky.com" style="color:#000" target="_blank">https://www.jsksky.com</a>）</span>
</center>
</body>
</html>
<script>alertSet('前往会员注册');</script>
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