<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta name="author" content="http://www.softwhy.com/" />
<title>document
</title>
<style>
* {
margin:
0px;
padding:
0px;
}
body {
background:
rgba(
0, 0, 0, .6)
;
}
.
container {
position:
absolute;
top:
50%
;
left:
50%
;
transform:
translate(-
50%
, -
50%)
;
-webkit-transform:
translate(-
50%
, -
50%)
;
-moz-transform:
translate(-
50%
, -
50%)
;
-o-transform:
translate(-
50%
, -
50%)
;
font-size:
81px;
color:
#ddd;
font-family:
'微软雅黑';
}
b {
transition:
.5s;
-webkit-transition:
.5s;
-moz-transition:
.5s;
-o-transition:
.5s;
}
.
test {
text-shadow: -
1px -
1px 0 #fff,1px 1px 0 #333,1px 1px 0 #444;
animation:
test 0.4s linear;
-webkit-animation:
test 0.4s linear;
-moz-animation:
test 0.4s linear;
-o-animation:
test 0.4s linear;
}
@keyframes test {
0% {
font-size:
12px;
}
50% {
font-size:
576px;
}
100% {
font-size:
81px;
}
}
</style>
</head>
<body>
<div class="container" align="center">
<b>5
</b>
</div>
<script>
var b =
document.
querySelector(
'.container b')
;
var num = b.
innerHTML -
1;
var action =
setInterval(
function () {
b.
innerHTML = num
;
num--
;
if (num <
0) {
clearInterval(action)
;
b.
setAttribute(
'class', 'test')
;
}
}
, 1000)
;
</script>
</body>
</html>
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