JS发送验证码；并设置cookie

Tool.send_code = function(obj)
{
        var isCheck = true, form = $('#editInfo_Form');
        var mobile = form.find('input[name=mobile]').val();
        if(!base.isPhone(mobile)){
            isCheck = false;
            base.showMsg("手机号格式错误");    
            return;
        }
        if(isCheck){
            var count = 60;
            var btn = $(obj);
            var resend = setInterval(function(){
                count--;
                if (count > 0){
                    btn.text(count+"秒后,重新获取");
                    $('#send_code_btn').attr("disabled", true);
                    $.cookie("skymsgdemo", count, {path: '/', expires: 7});
                }else {
                    $('#send_code_btn').attr("disabled", false);
                    clearInterval(resend);
                    btn.text("重新获取验证码");
                }
            }, 1000);
            //发送验证码
            $.ajax({
                    url:"/admin/index/tool",
                    type:'post',
                    dataType:'json',
                    data:{'a':'editUserInfo','mobile':mobile,'action':'sendcode'},
                    success:function(res)
                    {
                        base.showMsg(res.msg,2500,function(){});
                    }
            })
        }
};