通过jquery.cookie.js插件可以快速实现“点击获取验证码后60秒内禁止重新获取（防刷新）”的功能
效果图：
[img]http://files.jb51.net/file_images/article/201503/201503131159066.jpg[/img]
先到官网（[url=http://plugins.jquery.com/cookie/]http://plugins.jquery.com/cookie/[/url]）下载cookie插件，放到相应文件夹，代码如下：
[url=http://apps.bdimg.com/libs/jquery/1.11.1/jquery.min.js]http://apps.bdimg.com/libs/jquery/1.11.1/jquery.min.js[/url]" ></script>
<script src="jquery.cookie.js" ></script>
<style type="text/css">
* {margin: 0; padding: 0; font-family: "Microsoft Yahei";}
.captcha-box {width: 360px; height: 34px; margin: 30px; padding: 30px; border: #956E6F 1px dashed; border-radius: 5px; background-color: #FAF2F2;}
#mobile { float: left; width: 180px; height: 32px; border: #e5e5e5 1px solid; line-height: 32px; text-indent: 8px; outline: none;}
#getting {float: left; height: 34px; margin-left: -1px; padding: 0 18px; text-align: center; line-height: 34px; border: #e5e5e5 1px solid; background: linear-gradient(0deg, #f4f2f2 0%,#fbf9f9 100%); cursor: pointer; outline: none;}
</style>
<script>
$(function(){
/*仿刷新：检测是否存在cookie*/
if($.cookie("captcha")){
var count = $.cookie("captcha");
var btn = $('#getting');
btn.val(count+'秒后可重新获取').attr('disabled',true).css('cursor','not-allowed');
var resend = setInterval(function(){
count--;
if (count > 0){
btn.val(count+'秒后可重新获取').attr('disabled',true).css('cursor','not-allowed');
$.cookie("captcha", count, {path: '/', expires: (1/86400)*count});
}else {
clearInterval(resend);
btn.val("获取验证码").removeClass('disabled').removeAttr('disabled style');
}
}, 1000);
}
/*点击改变按钮状态，已经简略掉ajax发送短信验证的代码*/
$('#getting').click(function(){
var btn = $(this);
var count = 60;
var resend = setInterval(function(){
count--;
if (count > 0){
btn.val(count+"秒后可重新获取");
$.cookie("captcha", count, {path: '/', expires: (1/86400)*count});
}else {
clearInterval(resend);
btn.val("获取验证码").removeAttr('disabled style');
}
}, 1000);
btn.attr('disabled',true).css('cursor','not-allowed');
});
});
</script>
</head>
<body>
<div class="captcha-box">
<input type="text" id="mobile" maxlength="11" placeholder="请输入手机号码">
<input type="button" id="getting" value="获取验证码">
</div>
</body>
</html>
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