I have some strings like this: 2012-02-05T07:42:47.000Z mixed with other strings. It is always in this format. (but the numbers are not the same, of course...the times are different) (not Sun, 05 Feb 2012 07:42:47 GMT )
I want to know whether a string matches that format. How can I determine that? It's so complicated with the colons and dots and stuff.
Regex [0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}:[0-9]{2}:[0-9]{2}\.[0-9]{3}Z
ReplyDeleteIsn't there are way to parse it directly into Java without a regex?
ReplyDeleteWith a regex you know IF it is a date but if you need also the value I should check on some date parser function.
The ones for which !isNaN(+new Date(s))?
ReplyDeleteTry matching with the following regular expression:
ReplyDeletevar pattern = /\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}.\d{3}Z/;
var d = "2012-02-05T07:42:47.000Z";
if(d.match(pattern) !== null){
//success
} else {
//failed
}
You can use Date.parse( your_string ) and check the result. This will check any allowed date format, unlike regex.
ReplyDeletehttp://www.w3schools.com/jsref/jsref_parse.asp
Just realized your string is always in a given format, still unlike regex that function will check if day/month/year are correct etc. So maybe carry 2 checks: 1st to check string format, 2nd to check if numbers are right.