javascript to validate date???? please help

[kuolung]

does anyone have or know javacript that can do validate the date in these 4 formats:
mm/dd/yyyy
mmm dd, yyyy (aug 13, 1999)
mm/yyyy
yyyy

please help!! Thanks!!!!...

 

[iza]

please read the faq on it
and THEN let us know what's NOT in the faq you wish answered

 

[kuolung]

FAQs most links are outdated! please help!

 

[iza]

i'm really sorry i haven't seen they were unavailable at the moment - and i have to leave now so i can't spend time for a detailed answer
i can suggest you to use the Date object in javascript, its doc (netscape only - but it should fit ie) can be found at :

http://developer.netscape.com/docs/manuals/js/client/jsref/date.htm#1193137

alternatively you can parse it as if it was a string (using substr and index to retrieve the / or ,)
i hope since tomorrow morning someone will pop by and help you, or maybe you will manage with these 2 ideas (actually one is enough ;]), else i'll be here tomorrow

 

[SeAL]

sakura,

Here's my FAQ back: FAQ216-567

Hope this helps ...

 

[kuolung]

thank you so much! however, seem like it only checks one format which is mm/dd/yyyy
What should i change or add to make it validates all 4 format scenerios:
mm/dd/yyyy
mmm dd, yyyy (e.g. aug 13, 1999)
mm/yyyy
yyyy

Any advices? please help...i'm just a novice in javascript ! Thankssssssssssssssssssssssss

 

[kuolung]

well, here is what i have so far (only for mm/dd/yyyy) Please help me with the other 3 allowable formats :
mm/yyyy
mmm dd, yyyy
yyyy

thanks....

-----


<script>
function validateForm() {
dateCheckMsg = checkDate(document.searchchoice.beg_date_val.value);
if (dateCheckMsg.length > 0) {
alert(dateCheckMsg);
return false;
}
dateCheckMsg = checkDate(document.searchchoice.end_date_val.value);
if (dateCheckMsg.length > 0) {
alert(dateCheckMsg);
return false;
}
}
function checkDate(strDate) {
var strDate;
var strDateArray;
var strDay;
var strMonth;
var strYear;
var intday;
var intMonth;
var intYear;
var dateSeparator=new Array(&quot;/&quot;,&quot;,&quot;
var errMsg=&quot;Please use the correct date format for the Publishing Date\n(e.g. mm/dd/yyyy - 4/12/2001)&quot;;
var error=0;

if (strDate.length > 0) {
// Checks if the date uses &quot;/,&quot; to separate the month, day, and year.
if (strDate.indexOf(dateSeparator) != -1) {
strDateArray = strDate.split(dateSeparator);

// Checks if the data contains month, day, and year.
if (strDateArray.length != 3) {
return(errMsg);
}

strMonth = strDateArray[0];
strDay = strDateArray[1];
strYear = strDateArray[2];

// Checks if the values are numeric.
if (isNaN(strMonth) || isNaN(strDay) || isNaN(strYear)) {
return(&quot;The Publishing Date must be a numeric value\n(e.g. mm/dd/yyyy - 4/12/2001)&quot
}

intMonth=strMonth;
intDay=strDay;
if (strYear.length < 3) {
intYear=parseInt(&quot;20&quot;+strYear);
}
else {
intYear=parseInt(strYear);
}

if (intMonth > 12 || intMonth < 1) {
errMsg+=&quot;\n - The Month for the Publishing Date is incorrect.&quot;;
error=1;
}

if ((intMonth == 1 || intMonth == 3 || intMonth == 5 || intMonth == 7 || intMonth == 8 || intMonth == 10 || intMonth == 12) && (intDay > 31 || intDay < 1)) {
errMsg+=&quot;\n - The Day for the Publishing Date is incorrect.&quot;;
error=1;
}

if ((intMonth == 4 || intMonth == 6 || intMonth == 9 || intMonth == 11) && (intday > 30 || intday < 1)) {
errMsg+=&quot;\n - The Day for the Publishing Date is incorrect.&quot;;
error=1;
}

if (intMonth == 2) {
if (intDay < 1) {
errMsg+=&quot;\n - The Day for the Publishing Date is incorrect.&quot;;
error=1;
}

if (LeapYear(intYear) == true) {
if (intday > 29) {
errMsg+=&quot;\n - The Day for the Publishing Date is incorrect.&quot;;
error=1;
}
}
else {
if (intday > 28) {
errMsg+=&quot;\n - The Day for the Publishing Date is incorrect.&quot;;
error=1;
}
}
}

if (error == 1) {
return(errMsg);
}
}

// Returns an error if date does not user &quot;/&quot; to separate the month, day, and year.
else {
return(errMsg);
}
}

return(&quot;&quot;
}
</script>

<FORM name=searchchoice METHOD=&quot;post&quot; ACTION=&quot;/search&quot; onsubmit=&quot;return validateForm();&quot;>

<INPUT type=&quot;text&quot; name=&quot;beg_date_val&quot; size=&quot;12&quot; maxlength=&quot;12&quot;>
and <INPUT type=&quot;text&quot; name=&quot;end_date_val&quot; size=&quot;12&quot; maxlength=&quot;12&quot;>

</form>