Regular expression for validating date format ddmmyyyy


27-Mar-2020 03:40

Recipe 4.5 shows how to validate traditional date formats more accurately. Recipe 4.6 shows how to validate traditional time formats. Techniques used in the regular expressions in this recipe are discussed in Chapter 2. : Jan|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec))))(? Solutions 3 through 6 restrict the month to numbers between 1 and 12, and the day to numbers between 1 and 31.We use alternation (see Recipe 2.8) inside a group to match various pairs of digits to form a range of two-digit numbers.The only difference between the two forms is readability. The final two solutions allow all of the date formats, just like the first two examples.The difference is that the last two use an extra level of alternation to restrict the dates to 12/31 and 31/12, disallowing invalid months, such as 31/31., for example.

regular expression for validating date format ddmmyyyy-34

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^(((0[1-9]|[12]\d|3[01])\/(0[13578]|1[02])\/((19|[2-9]\d)\d))|((0[1-9]|[12]\d|30)\/(0[13456789]|1[012])\/((19|[2-9]\d)\d))|((0[1-9]|1\d|2[0-8])\/02\/((19|[2-9]\d)\d))|(29\/02\/((1[6-9]|[2-9]\d)(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00))))$ Matches [29/02/2000], [30/04/2003], [01/01/2003] Non-Matches [29/02/2001], [], [1/1/1899] or check this link Script/0520__Regular-Expressions/Use Regular Good Luck google will give you 20400 results for your query Recipe 4.7 shows how to validate date and time formats according to the ISO 8601 standard.



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