代码：时间

<script type="text/javascript" src="http://cdn.bootcss.com/jquery/1.11.2/jquery.min.js"></script>
<script type="text/javascript">
$(function(){
    var firstTime=0;
    var timer;//定时器
    var mz=59;//秒针
    $("#button").click(function(){
        var curTime = (new Date()).getTime();
        if(firstTime==0 || curTime-firstTime>60000){
            firstTime = (new Date()).getTime();
            $("#button").addClass("gray");
            $("#button").val("60秒后再发");

            timer=setInterval(function(){
                var curTime = (new Date()).getTime();
                if(curTime-firstTime>=60000){
                    $("#button").removeClass("gray");
                    $("#button").val("获取验证码");
                    mz=59;
                    clearInterval(timer);//删掉定时器
                }else{
                    $("#button").val(mz+"秒后再发");
                    mz--;
                }
            },1000);//延时执行
        }else{
            console.log("不让点");
        }
    });
});
</script>
<style type="text/css">
#button{border:0;padding:5px 10px;}
.gray{background:#333;color:#aaa;}
</style>
<input type="button" value="获取验证码" id="button">