How to pattern match dd-MON-yyyy

[bostonnole]

Sorry, but I am a novice with JavaScript. I need to know the syntax for doing a pattern match of a date field that will be in the format: dd-MON-yyyy, where dd is the date, MON is the three character abreviation of the month and yyyy is the fully 4 digit year.

I've bungled my way into this so far but it does not work at all:

var regDate3 = /(0?[1-9]|[1-2]\d)|3(0|1)-(JAN|FEB|MAR|APR|MAY|JUN|JUL|AUG|SEP|OCT|NOV|DEC)-d{4}/;

Please, any help would be greatly appreciated.

[bostonnole]

bump

[AdamGundry]

Try this:

var regDate3 = /\d{2}-(?:JAN|FEB|MAR|APR|MAY|JUN|JUL|AUG|SEP|OCT|NOV|DEC)-\d{4}/;

Adam

[bostonnole]

Thanks Adam, that was exactly what I was looking for!!!

[olerag]

Adam,

Sorry but this one escapes me. How is this pseudo-code
used to check, lets say, a <input type="text"> object if the
value entered is, oh, 04-JUL-1776??

[bostonnole]

This is what I wound up with:

<INPUT TYPE='TEXT' NAME='txtDate' onChange='checkDateValues(this);'>

<SCRIPT>
function checkDateValues(obj) {
var regDate = /^ *((0?[1-9]|[1-2]\d)|3(0|1)) *\-(?:JAN|FEB|MAR|APR|MAY|JUN|JUL|AUG|SEP|OCT|NOV|DEC)-\d{4}/;

L_BadDate = "This parameter is of type \"Date\" and should be in the format \"dd-MON-yyyy\" where \"dd\" is the number of days into the given month, \"MON\" is the month (e.g. January = JAN), and \"yyyy\" is the four digit year.";
if (obj.value != "") {
value = obj.value;
if ( ! regDate.test ( value ) )
{
// type is a Date
alert ( L_BadDate );
obj.focus();
obj.select();
return false;
}
}

}
</SCRIPT>

[olerag]

Thanx,

Totally ignorant on reg exp notation and I haven't seen
the "test()" function before.

Have to check this stuff out.