jquery 实现 点击按钮后倒计时效果，多用于实现发送手机验证码、邮箱验证码
<!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> <title></title> <script src="HTML/js/jquery-1.4.1.min.js" type="text/javascript"></script> <script type="text/javascript"> /*-------------------------------------------*/ var InterValObj; //timer变量，控制时间var count = 5; //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=$("#uid").val();//用户uidif ($("#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("请在" + curCount + "秒内输入验证码"); 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);//停止计时器 $("#btnSendCode").removeAttr("disabled");//启用按钮 $("#btnSendCode").val("重新发送验证码"); code = ""; //清除验证码。如果不清除，过时间后，输入收到的验证码依然有效 } else { curCount--; $("#btnSendCode").val("请在" + curCount + "秒内输入验证码"); } } </script></head><body> <input id="btnSendCode" type="button" value="发送验证码" οnclick="sendMessage()" /></p></body></html>
posted on
2014-12-01 19:48
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转载于:https://www.cnblogs.com/guojianjavaweb/p/4135842.html
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