I have the javascript regex /^[a-zA-Z]{6}[a-zA-Z0-9]{5}$/ but I would also like the test to pass if the string is less than or greater than 11 characters. So any string from 0-10 characters would pass, any string 12 or greater characters would pass, but if it is exactly 11 characters it will be evaluated by the previously mentioned test.
Regex test but only when 11 characters
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1 Answers
You can use
/^(?:.{0,10}|.{12,}|[a-zA-Z]{6}[a-zA-Z0-9]{5})$/
See the regex demo.
Details
^- start of string(?:.{0,10}- zero to ten chars other than line break chars|- or.{12,}- twelve or more chars other than line break chars|- or[a-zA-Z]{6}[a-zA-Z0-9]{5}- six letters and then five alphanumeric chars
)- end of the group$- end of string.
To also match line break chars, you may add the /s flag (if you are using the ECMAScript 2018 compliant JavaScript environment) or replace each . with [\w\W] / [\s\S] / [\d\D] / [^].
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