验证码倒计时

时间 2019-11-18
标签验证码倒计时繁體版
原文原文链接
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<head>
<title></title>

<script type="text/javascript" src="js/jquery-1.7.2.min.js"></script>
<script type="text/javascript">
var InterValObj; //timer变量，控制时间
var count = 30; //间隔函数，1秒执行
var curCount;//当前剩余秒数
var code = ""; //验证码
var codeLength = 6;//验证码长度
function sendMessage() {
curCount = count;
var dealType; //验证方式
var uid=$("#uid").val();//用户uid
if ($("#phone").attr("checked") == true) {
	dealType = "phone";
}
else {
	dealType = "email";
}
//产生验证码
for (var i = 0; i < codeLength; i++) {
	code += parseInt(Math.random() * 9).toString();
}
//设置button效果，开始计时
	$("#btnSendCode").attr("disabled", "true");
	$("#btnSendCode").val( + curCount + "秒再获取");
	InterValObj = window.setInterval(SetRemainTime, 1000); //启动计时器，1秒执行一次
//向后台发送处理数据
	$.ajax({
		type: "POST", //用POST方式传输
		dataType: "text", //数据格式:JSON
		url: 'Login.ashx', //目标地址
		data: "dealType=" + dealType +"&uid=" + uid + "&code=" + code,
		error: function (XMLHttpRequest, textStatus, errorThrown) { },
		success: function (msg){ }
	});
}
//timer处理函数
function SetRemainTime() {
	if (curCount == 0) {                
		window.clearInterval(InterValObj);//中止计时器
		$("#btnSendCode").removeAttr("disabled");//启用按钮
		$("#btnSendCode").val("从新发送验证码");
		code = ""; //清除验证码。若是不清除，过期间后，输入收到的验证码依然有效    
	}
	else {
		curCount--;
		$("#btnSendCode").val( + curCount + "秒再获取");
	}
}
</script>

</head>
<body>
		
		<div style="width:320px;margin:40px auto 0 auto;">
			<input type="text" style="margin-right: 10px;" class="" />
			<input id="btnSendCode" type="button" value="获取验证码" onClick="sendMessage()" />
		</div>
		
</body>
</html>