手机号码验证和短信验证码60s重新发送验证码

$("#verifyCodeBtn").click(function () {
            var phone = $("#mobile").val();
            $.post(veryfyCodeAction({phone:phone}), function(data) {
            });
            var timer=null;
            clearInterval(timer);//这句话至关重要
            var time=60;
            timer=setInterval(function(){
                console.log(time);
                if(time<=0){
                    $("#verifyCodeBtn").val("获取短信验证码")
                    $('#verifyCodeBtn').attr("disabled",false);

                }else {
                    $('#verifyCodeBtn').attr("disabled",true);
                    $("#verifyCodeBtn").val(time+"秒后重新获取短信验证码")
                    time--;
                }
            },1000);
        });

        $("#mobile").blur(function(){
            var mobile = $("#mobile").val();
            if($.trim(mobile) == '')  {
                $("#mobileSpan").css("color","red")
                $("#mobileSpan").html("*手机号为空")
                $("#mobile").focus();
                return;
            }
            var regExp = /^(86)?((13\d{9})|(15[0,1,2,3,5,6,7,8,9]\d{8})|(18[0,5,6,7,8,9]\d{8}))$/;
            if(!regExp.test(mobile)){
                $("#mobileSpan").css("color","red")
                $("#mobileSpan").html("*手机号码格式错误");
                $("#mobile").focus();
                return;
            }
            $("#mobileSpan").html("")
        })