I want to create a regular expression for password which must have
- a minimum of 7 characters
- with at least 1 number and 1 alphabet within that first 7 characters.
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kayalvizhi kathirvel
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3Show us what you have tried so far. – Pramod Karandikar Jul 29 '15 at 06:47
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((?=.*[a-z])(?=.*\d))[a-z0-9]{7,} but this is taking even if it han only alphabets in first 7 character – kayalvizhi kathirvel Jul 29 '15 at 07:06
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Since the characters after the first 7 do not require checking, you can run a regex just on the first 7:
/^(?=.*[0-9a-zA-Z]).{7}$/.test(password.substring(0,8))
- ^ starts with
- (?=.*[0-9a-zA-Z]) positive lookahead: must contain at least one of these characters
- .{7} match exactly 7 characters
dcollien
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