js之验证码倒计时功能

<!DOCTYPE html>

<html >

<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

<title>发送验证码倒计时功能</title>

<style>

@charset "utf-8";

*{ margin:0; padding:0; list-style:none}

body{ background:#EBECED; font-family:'微软雅黑'}

.form{width: 450px;height: auto; margin:100px auto; overflow:hidden;font-size: 16px;color: #1b1b1b;text-align: left; padding:50px; border:1px solid #ccc; border-radius:10px;}

.form div{padding:5px 0;overflow: hidden;}

.form label{width: 90px;display: block;float: left;}

.form .infos{width:200px;height: 26px;line-height: 26px;border:1px solid #BFBFBF;padding:2px;border-radius:4px;float: left;}

.form .div-phone a.send1{height: 26px;text-decoration:none;line-height: 26px;padding:2px;width: 80px;background: #AA8926;font-family: '宋体';color: #fff;font-size: 12px;text-align: center;display: block;float: left;border-radius:2px;margin-left:2px;-webkit-transition:all 0.2s linear;-moz-transition:all 0.2s linear;-ms-transition:all 0.2s linear;-o-transition:all 0.2s linear;transition:all 0.2s linear;}

.form .div-phone a.send1:hover{text-decoration: none;background: #866c1b;-webkit-transition:all 0.2s linear;-moz-transition:all 0.2s linear;-ms-transition:all 0.2s linear;-o-transition:all 0.2s linear;transition:all 0.2s linear;}

.form .div-phone a.send0{height: 26px;text-decoration:none;line-height: 26px;padding:2px;width: 80px;background: #A1A1A1;font-family: '宋体';color: #fff;font-size: 12px;text-align: center;display: block;float: left;border-radius:2px;margin-left:2px;}

.form .div-phone a.send0:hover{background: #A1A1A1;font-family: '宋体';color: #fff;font-size: 12px;text-decoration: none;}

.form span.error{height: 26px;line-height: 26px;padding:2px;width: 100px;color: red;padding-left:20px;display: block;float: left;margin-left:10px;font-size: 12px;font-family: '宋体';background: url(../images/error.png) no-repeat left center;}

.form #phone{width: 116px;}

.form .div-conform{padding-right:153px;}

.form .div-conform a.conform{width: 136px;height: 34px;display: block;text-align: left;overflow: hidden;background: url(../images/btn.jpg) no-repeat;float: right;text-indent: -1000px;}

</style>

</head>

<body>

<!--代码部分begin-->

<div class="form">

<div class="div-name">

<label for="name">用户名</label><input type="text" id="name" class="infos" placeholder="请输入用户名" />

</div>

<div class="div-phone">

<label for="phone">手机</label><input type="text" id="phone" class="infos" placeholder="请输入手机" />

<a href="javascript:;" rel="external nofollow" rel="external nofollow" class="send1" onclick="sends.send();">发送验证码</a>

</div>

<div class="div-ranks">

<label for="ranks">验证码</label><input type="text" id="ranks" class="infos" placeholder="请输入验证码" />

</div>

<div class="div-conform">

<a href="javascript:;" rel="external nofollow" rel="external nofollow" class="conform" onclick="sends.conform();">提交</a>

</div>

</div>

<script src="http://www.lanrenzhijia.com/ajaxjs/jquery.min.js"></script>

<script>

var sends = {

checked:1,

send:function(){

  var numbers = /^1\d{10}$/;

  var val = $('#phone').val().replace(/\s+/g,""); //获取输入手机号码

  if($('.div-phone').find('span').length == 0 && $('.div-phone a').attr('class') == 'send1'){

  if(!numbers.test(val) || val.length ==0){

   $('.div-phone').append('<span class="error">手机格式错误</span>');

   return false;

  }

  }

  if(numbers.test(val)){

  var time = 30;

  $('.div-phone span').remove();

  function timeCountDown(){

   if(time==0){

   clearInterval(timer);

   $('.div-phone a').addClass('send1').removeClass('send0').html("发送验证码");

   sends.checked = 1;

   return true;

   }

   $('.div-phone a').html(time+"S后再次发送");

   time--;

   return false;

   sends.checked = 0;

  }

  $('.div-phone a').addClass('send0').removeClass('send1');

  timeCountDown();

  var timer = setInterval(timeCountDown,1000);

  }

}

}

</script>

</body>

</html>
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js之验证码倒计时功能

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