RegExp pattern for a password [duplicate]

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• javascript regex for password containing at least 8 characters, 1 number, 1 upper and 1 lowercase [duplicate] 4 answers

I need a RegExp pattern for a password that:

contains at least 1 digit and 1 number, only has digits and numbers, case sensitive, 6 characters minimum.

This would be simple, however, I don't know how to make sure the user has at LEAST 1 number AND 1 letter, but in any order.