[Solved] Regular expression to validate text field format “WI-XXXX-XXXX”

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The regexp would be:

/^WI-(?:20[0-9]{2}|2100)-[1-9][0-9]{0,3}$/

This regexp allows arbitrary number of -nnn after the year:

/^WI-(?:20[0-9]{2}|2100)(?:-\d+)+$/

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solved Regular expression to validate text field format “WI-XXXX-XXXX”