.btn {
???width:120px;
???height:40px; ??
???float:left;
???color: white;
???background-color: #3498db;
???border-radius: 6px;
???text-align: center;
???text-decoration: none;
}
<input type="button" class="btn" value="获取验证码" onclick="clickButton(this)"><script>
function clickButton(obj){
???var obj = $(obj);
???obj.attr("disabled","disabled");
???var time = 60;
???var set=setInterval(function(){
???obj.val(--time+"(s)");
???}, 1000);
???setTimeout(function(){
???obj.attr("disabled",false).val("重新获取验证码");
???clearInterval(set);
???}, 60000);
}
jquery倒计时制作
原文地址：http://www.cnblogs.com/zy66blogs/p/7481957.html