js 簡單實現獲取簡訊按鈕倒計時60秒
阿新 • • 發佈：2018-12-08
<!DOCTYPE html>
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>js實現倒計時60秒的簡單程式碼(推薦)</title>
<script type="text/javascript" src="js/jquery.js"></script>
</head>
<body>
<input type="button" id="btn" value="免費獲取驗證碼" onclick="settime(this)" />
<script type="text/javascript">
var countdown=60;
function settime(val) {
if (countdown == 0) {
val.removeAttribute("disabled");
val.value="免費獲取驗證碼";
countdown = 60;
} else {
val.setAttribute("disabled", true);
val.value="重新發送(" + countdown + ")";
countdown--;
setTimeout(function() {
settime(val)
},1000)
}
}
</script>
</body>
</html>