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16

javascript regex validate years in range

rated 0 times [ 23] [ 7] / answers: 1 / hits: 34458 / 11 Years ago, tue, july 9, 2013, 12:00:00

I have input field for year and I need a regex for validation it.
I have such code: ^([12]d)?(dd)$.
But I want allow to validate only years in certain range (1990-2010, for example). How can I do it?

Edit. range must be 1950-2050

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keric

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answered 11 Years ago anabellejaynav · Accepted Answer

Try this:

1990 - 2010:

/^(199d|200d|2010)$/

1950 - 2050:

/^(19[5-9]d|20[0-4]d|2050)$/

Other examples:

1945 - 2013:

/^(194[5-9]|19[5-9]d|200d|201[0-3])$/

1812 - 3048:

/^(181[2-9]|18[2-9]d|19dd|2d{3}|30[0-3]d|304[0-8])$/

Basically, you need to split your range into easy regexable chunks:

1812-3048: 1812-1819 + 1820-1899 + 1900-1999 + 2000-2999 + 3000-3039 + 3040-3048

    regex: 181[2-9]    18[2-9]d   19dd      2d{3}      30[0-3]d   304[0-8]