how can I generate REGEX for value

how can generate regex value > 2900.00 used formula below seems not working

(^[2-9][0-9]{3}|[0-9]{5,})(\.[0-9]+)$

i think should work you

/^29\d{2}\.[0-9][1-9]|[3-9]\d{3}\.\d{2}|[1-9]\d{4,}\.\d{2}$/

explanation

4 digit >= 2900.01 — 29\d{2}\.[0-9][1-9]

4 digit >= 3000.00 — [3-9]\d{3}\.\d{2}

any 5+ digit — [1-9]\d{4,}\.\d{2}

personally, think these kinds of regexp kind of silly, though. can't parse , compare result numerically?

Brazzel