I'm trying to create regex and test in javascript.
RULE: The text should only be 8 characters. Only contain Upper case and numbers 1-5 No lower case or special characters or 6-7 numbers.
example:
12345678 -- false
a2345678 -- false
aabbccdd -- false
AABB33DD -- true // contains BOTH uppercase and
numbers between 1-5 and nothing else
AABB88DD -- false
AABBCCDD -- false
AABB3.DD -- false
CODE:
var pattern = new RegExp("^(?=.*[1-5])(?=.*[A-Z]).+$");
pattern.test(code)
I'm not able to crate the right regex. Can anyone please help?
Use
^(?=.*[1-5])(?=.*[A-Z])[A-Z1-5]{8}$
See regex proof.
EXPLANATION
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^ the beginning of the string
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(?= look ahead to see if there is:
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.* any character except \n (0 or more times
(matching the most amount possible))
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[1-5] any character of: '1' to '5'
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) end of look-ahead
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(?= look ahead to see if there is:
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.* any character except \n (0 or more times
(matching the most amount possible))
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[A-Z] any character of: 'A' to 'Z'
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) end of look-ahead
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[A-Z1-5]{8} any character of: 'A' to 'Z', '1' to '5'
(8 times)
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$ before an optional \n, and the end of the
string