<!DOCTYPE html>
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>js实现倒计时</title>
<!-- <script type="text/javascript" src="js/jquery.js"></script> -->
<style>
#getCode {
margin: 0 auto;
284px;
height: 34px;
border: 1px solid #ccc;
border-radius: 4px 4px;
}
input[type="text"] {
padding: 11px 10px 8px 10px;
border: none;
border-radius: 4px 4px;
}
input[type="button"] {
border: 0px;
86px;
height: 20px;
color: #3399ea;
font-size: 13px;
cursor: pointer;
}
</style>
</head>
<body>
<div id="getCode">
<input type="text" placeholder="6位数字的验证码" id="number">
<input type="button" id="get" width="150" value="获取验证码" onclick="settime(this)">
</div>
<script type="text/javascript">
var countdown = 60;
function settime(val) {
if (countdown == 0) {
val.removeAttribute("disabled");
val.value = "获取验证码";
countdown = 60;
} else {
val.setAttribute("disabled", true);
val.value = countdown + "s";
countdown--;
setTimeout(function() {
settime(val)
}, 1000)
}
}
</script>
</body>
</html>