regex - RegExp date validation in javascript -


i learned regular expressions , created dd-mm-yyyy date validator regular expressions:

^(0[1-9]|[12][0-9]|3[01])([-/.])(0[1-9]|1[0-2])\2(19|20)\d\d$

regular expression visualization

debuggex demo

it seems work fine. wondering if there improvements made make sure there no errors. suggestions?

why reinvent wheel. take of built-in date parsing method date.parse(string) this:

var timestamp = date.parse(str); // str input string data var date = null if (isnan(timestamp) == false)     date = new date(timestamp); else     alert("invalid date");

Comments

Post a Comment

Popular posts from this blog

iphone - Three second countdown in cocos2d -

i trying have 3 second countdown display when level beat in game. did: -(void) gamesegmentbeat { [self pauseschedulerandactions]; // overlay game opaque background ccsprite *opaquebg = [ccsprite spritewithfile:@"background1.png"]; opaquebg.position = screencenter; [self addchild:opaquebg z:10000]; // these 3 labels 3 seconds cclabelttf *three = [cclabelttf labelwithstring:@"3" fontname:@"helvetica" fontsize:100]; three.position = ccp(screencenter.x, screencenter.y); cclabelttf *two = [cclabelttf labelwithstring:@"2" fontname:@"helvetica" fontsize:100]; two.position = ccp(screencenter.x, screencenter.y); cclabelttf *one = [cclabelttf labelwithstring:@"1" fontname:@"helvetica" fontsize:100]; one.position = ccp(screencenter.x, screencenter.y); // secondspast specified in update method secondspast = 0; if (secondspast == 1) { [self addchild:thr...
Read more

hyperlink - how to do url routing in php -

sorry, don't know should exact technical term problem statement title of thread might misleading/confusing. that's reason why not able search problem solution on google. okay, i'm developing simple social network users. want each user have own profile link. for example, if username of user 'xyz' profile link should ' http://example.com/user/xyz now how create "virtual" link? edit: okay, learned it's mod_rewrite , got similar question how dynamically rewrite url facebook routes php delicate matter. mod_rewrite can in beginning, after becoming mess , f*** rather help, when "big" software needs scalable. remembering "routes" not part of specific application, nomenclature "server" interprets request "client" , returns specific value "client" configuration of request. ie, "router" server. what recommend study http protocol, rest , on. this surely in many things, knowi...
Read more

java.util.scanner - How to read and add only numbers to array from a text file -

i'm learning java , have question regarding reading file want read numbers file contains strings well. here example of file: 66.56 "3 java 3-43 5-42 2.1 1 and here coding: public class test { public static void main (string [] args){ if (0 < args.length) { file x = new file(args[0]); try{ scanner in = new scanner( new fileinputstream(x)); arraylist<double> test = new arraylist<>(); while(in.hasnext()){ if(in.hasnextdouble()){ double f=in.nextdouble(); test.add(f);} else {in.next();} } catch(ioexception e) { system.err.println("exception during reading: " + e); } } my problem add 66.56,2.1 , 1 doesn't add 3 after "3 or ignores 3-43 , 5-42 can tell me how skip strings , add doubles here? thanks all said 3 ie; "3, 3-43 , 4-42 strings either u read string , split , check number @ " , - or put in space between characters , integers. jvm after compilation tre...
Read more