本文实例讲述了jQuery实现倒计时重新发送短信验证码功能的方法。分享给大家供大家参考，具体如下：
<!DOCTYPE html>
<html>
<head>
<script src="http://libs.baidu.com/jquery/1.10.2/jquery.min.js"></script>
<script type="text/javascript">
var countdown=60;
function settime(obj) {
if (countdown == 0) {
obj.removeAttribute("disabled");
obj.value="免费获取验证码";
countdown = 60;
return;
} else {
obj.setAttribute("disabled", true);
obj.value="重新发送(" + countdown + ")";
countdown--;
}
setTimeout(function() {
settime(obj) }
,1000)
}
</script>
<body>
<input type="button" id="btn" value="免费获取验证码" onclick="settime(this)" />
</body>
</html>
实践例子：
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>抢占iPhone7专属预订名额</title>
<link rel="stylesheet" href="getiphone.css" />
</head>
<body style="width: 100%;height: 100%;background:#fff url(iponeImg/beijing.png) no-repeat center fixed;background-size:100% 100%;text-align: center;">
<div class="top">
<img src="iponeImg/wenan.png" />
</div>
<h1 class="title"><span></span>上市时间同步发售<span></span><br />首批新苹果30个预订专属名额</h1>
<form id="activityForm" class="form-horizontal" method="post" action="/wamei/activityController/save.htm">
<label>
<span><img src="iponeImg/yonghu.png" /></span>
<i></i>
<input type="text" class="inline-input" id="name" name="name" placeholder="请输入您的真实姓名" datatype="*1-20" errormsg="姓名最多20个中英文字符！" nullmsg="请输入您的真实姓名！" />
</label>
<label>
<span><img src="iponeImg/dianhua.png" /></span>
<i></i>
<input type="text" class="inline-input" id="mobilePhone" name="mobilePhone" placeholder="请输入您的手机号码" datatype="*" errormsg="请输入您的手机号码！" nullmsg="请输入您的手机号码！" />
</label>
<label>
<span><img src="iponeImg/yanzhengma.png" /></span>
<i></i>
<input type="text" id="validateCode" class="inline-input" name="validateCode" placeholder="验证码" datatype="*" errormsg="请输入验证码！" nullmsg="请输入验证码！" style="width:180px;" />
<a id="num" mark="1" >获取验证码</a>
</label>
<label id="get">
<input id="confirm" type="submit" value="提交抢占名额" />
</label>
<label>
<a href="/wamei/pages/activity/details.html" id="activity">查看活动详情</a>
</label>
</form>
<div class="bottom">
<span></span>
<img src="iponeImg/logo.png" />
<span></span>
</div>
<div id="success">
<div class="successImg">
<a class="close"></a>
<p><img src="iponeImg/chenggong.png" />恭喜提交成功</p>
<p style="padding-top: 0px;font-size: 23px;">分享一下，安抚激动的心</p>
</div>
</div>
</body>
</html>
<!-- scripts -->
<script src="/wamei/pages/js/jquery.min.js"></script>
<script src="/wamei/pages/js/jquery.form.js"></script>
<script src="/wamei/pages/js/bootstrap.min.js"></script>
<script src="/wamei/pages/js/Validform_v5.3.2.js"></script>
<script type="text/javascript">
$(function(){
//提交表单
$("#activityForm").Validform({
btnSubmit:"#confirm",
tiptype:function(msg){
if(msg != '' && msg!='通过信息验证！'){
alert(msg);
}
},
tipSweep:true,
beforeSubmit:function(){
saveForm();
return false;
}
});
});
//只允许在APP内打开
function isMobile(){
var u = navigator.userAgent;
var mobileFlag = u.indexOf('type/tfbrowser') > -1;
return mobileFlag;
}
//手机号码验证
$("#mobilePhone").blur(function(){
var mobilePhone =$("#mobilePhone").val();
var myreg = /^(((13[0-9]{1})|(14[0-9]{1})|(17[0]{1})|(15[0-3]{1})|(15[5-9]{1})|(18[0-9]{1}))+\d{8})$/;
if(mobilePhone){
if(!myreg.test(mobilePhone)){
alert("请输入有效的手机号码！");
$("#mobilePhone").val("");
return ;
}
}
});
//发送短信验证码
$("#num").click(function(){
var mobilePhone =$("#mobilePhone").val();
var url="/wamei/activityController/sendValidCode.htm";
if(!mobilePhone){
alert("请输入您的手机号码！");
return ;
}
var mark = $("#num").attr("mark");
if("1"==mark){
settime(this);
$.post(url,{mobilePhone:mobilePhone},function(html){
var data = eval("("+html+")");
if(data && data.statusCode==1){
console.log("send success!");
alert("短信验证码已发送，请查收！");
}else{
alert(data.msg);
}
});
}
});
//提交form表单
function saveForm(){
$("#activityForm").ajaxSubmit({
//data: {'columnStr':columnStr},
type: 'post',
async: false,
success: function($data) {
var data = eval("("+$data+")");
if(data && data.statusCode==1){
$("#success").show();
}else{
alert(data.msg);
$("#mobilePhone").val("");
}
}
});
}
$(".close").click(function(){
$("#success").hide();
window.location.reload();
})
//短信后倒计时
var countdown=60;
function settime(obj) {
if (countdown == 0) {
$(obj).attr("disabled",false);
$(obj).attr("mark","1");
$(obj).html("获取验证码");
countdown = 60;
return;
} else {
$(obj).attr("disabled", true);
$(obj).attr("mark","0");
$(obj).html("重新发送(" + countdown + ")");
countdown--;
}
setTimeout(function() {
settime(obj) }
,1000)
}
// $("#confirm").click(function(){
// $("#success").show();
// })
</script>
PS：这里再为大家提供2款非常方便的正则表达式工具供大家参考使用：
JavaScript正则表达式在线测试工具：
http://tools.zyiz.net/regex/javascript
正则表达式在线生成工具：
http://tools.zyiz.net/regex/create_reg
更多关于jQuery相关内容感兴趣的读者可查看本站专题：《jQuery日期与时间操作技巧总结》、《jQuery扩展技巧总结》、《jQuery常用插件及用法总结》、《jQuery表格(table)操作技巧汇总》、《jquery中Ajax用法总结》及《jquery选择器用法总结》
希望本文所述对大家jQuery程序设计有所帮助。
