On Saturday, August 24, 2019 at 6:36:54 AM UTC-7, @TiddlyTweeter wrote:
>
> Mark S. wrote:
>>
>> Here's a probably inefficient date VALIDATOR for dates starting
>>> 0000-01-01 following format yyyy-mm-dd (which I find to be the most
>>> generally useful). Ok, I didn't check the rules. I think there's something
>>> about a surprise
>>>
>> leap year every 400 years, so there's probably more tweaking to be done
>> to match the Gregorian calendar precisely.
>>
>> <option
>> value="^(?=\d{4})(((?!\d\d(00|04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96))\d{4}-(((0[13578]|10|12)-(0[1-9]|[12]\d|30|31))|((04|06|09|11)-(0[1-9]|[12]\d|30))|((02)-(0[1-9]|1\d|2[1-8]))))|((?=\d\d(00|04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96))\d{4}-(((0[13578]|10|12)-(0[1-9]|[12]\d|30|31))|((04|06|09|11)-(0[1-9]|[12]\d|30))|((02)-(0[1-9]|1\d|2[1-9])))))">Experimental
>>
>> VALIDATE yyyy-mm-dd</option>
>>
>>
> Lol! Nice one! I'd put that in the REALLY ADVANCED category for regex!
> Most users would have no clue how that works!
> Anyway I think you got it off the net? It's not bad, but faulty :-).
>
>
Actually, I rolled it myself.
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