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這篇文章將為大家詳細講解有關js如何實現手機發送驗證碼功能，小編覺得挺實用的，因此分享給大家做個參考，希望大家閱讀完這篇文章后可以有所收獲。
效果圖：
代碼如下：
<!DOCTYPE html>
<html >
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>發送驗證碼倒計時功能</title>
<style>
@charset "utf-8";
*{ margin:0; padding:0; list-style:none}
body{ background:#EBECED; font-family:'微軟雅黑'}
.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: '宋體';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: '宋體';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: '宋體';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: '宋體';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>
<!--代碼部分begin-->
<div class="form">
<div class="div-name">
<label for="name">用戶名</label><input type="text" id="name" class="infos" placeholder="請輸入用戶名" />
</div>
<div class="div-phone">
<label for="phone">手機</label><input type="text" id="phone" class="infos" placeholder="請輸入手機" />
<a href="javascript:;" rel="external nofollow" rel="external nofollow" class="send1" onclick="sends.send();">發送驗證碼</a>
</div>
<div class="div-ranks">
<label for="ranks">驗證碼</label><input type="text" id="ranks" class="infos" placeholder="請輸入驗證碼" />
</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 = $('#phone').val().replace(/\s+/g,""); //獲取輸入手機號碼
if($('.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">手機格式錯誤</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("發送驗證碼");
sends.checked = 1;
return true;
}
$('.div-phone a').html(time+"S后再次發送");
time--;
return false;
sends.checked = 0;
}
$('.div-phone a').addClass('send0').removeClass('send1');
timeCountDown();
var timer = setInterval(timeCountDown,1000);
}
}
}
</script>
</body>
</html>關于“js如何實現手機發送驗證碼功能”這篇文章就分享到這里了，希望以上內容可以對大家有一定的幫助，使各位可以學到更多知識，如果覺得文章不錯，請把它分享出去讓更多的人看到。
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