Regular expression for validating time in
[1-9] # 01-09 or 1-9 | # .[0-9] # 10-19 or 20-29 | # .3 # 30, 31 ) #end of group #1 / # follow by a "/" ( # start of group #2 0?
[1-9] # 01-09 or 1-9 | # .1 # 10,11,12 ) # end of group #2 / # follow by a "/" ( # start of group #3 (19|20)\d\d # 19[0-9][0-9] or 20[0-9][0-9] ) # end of group #3 The above regular expression is used to validate the date format in “dd/mm/yyyy”, you can easy customize to suit your need.
Note that there's just no way to check if the last portion of a path is a file or a directory just by the name alone.
You could try to match for an extension, but there's no requirement for a file to have an extension.
metacharacter match anything INCLUDING line breaks. Java Script by default does not support this since the . This is the best solution and should work 99% of the time is. If you want to match an IP within a string, get rid of the leading ^ and trailing $ to use \b (word boundaries) instead. The regular expression is only useful to validate the format of the date as entered by a user.
Consult this page for more details on this problem. For the actual date validity, you should rely on another language.
“29/2/2007”, “29/02/2007” – 2007 is not leap year, only has 28 days 4.
“1/13/2010”, “01/01/1820” – month is out of range [1-12], year is out of range [1900-2999] 3.
Having a-z and A-Z means that both lowercase and uppercase letters are allowed.
There are probably dozens of way to format a phone number.
Your user interface should take care of the formatting problem by having a clear documentation on the format and/or split the phone into parts (area, exchange, number) and/or have an entry mask.
indicates the minimum and maximum number of characters.
This will allow domain names with 2, 3 and 4 characters e.g.; us, tx, org, com, net, wxyz).
Search for regular expression for validating time in:
The following expression is pretty lenient on the format and should accept 999-999-9999, 9999999999, (999) 999-9999.