Question

Did anyone knows regular expression that validate the string against following criteria:

• Names can be between 1 and 255 characters long.
• Allowed characters are a–z, A–Z, 0–9, ‘_’ (underscore), ‘-‘ (hyphen), and ‘.’ (period).

Thanks.

Answer 1

Use this regex: /^[\w\-.]{1,255}$/
Explanation: http://regex101.com/r/tR0lR8