JavaScript檢驗時間格式

檢驗時間格式
// 檢驗時間格式
            function CheckTime(o){
                var reg = new RegExp("^([0-1]?\\d|2[0-3]):[0-5]\\d$","gi");
                if(o.value.trim() != ""){
                    if(reg.test(o.value)){
                        return true;
                    }
                    alert(LanguageDataCollection.Message_DateTimeFormat);
                    o.focus();
                    return false;
                }
            };