HTML：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<script src="js/jquery-2.2.2.min.js"></script>
<script type="text/javascript">
var countdown = 60;
function settime(obj) {
if (countdown == 0) {
obj.removeAttribute("disabled");
obj.value = "等待60秒";
countdown = 60;
return;
} else {
obj.setAttribute("disabled", true);
obj.value = "重新发送(" + countdown + ")";
countdown--;
}
setTimeout(function () {
settime(obj)
}, 1000)
}
</script>
</head>
<body>
<input type="button" id="btn" value="click me" onclick="settime(this)"/>
</body>
</html>
result：
