Online Regex Tool

In this post, I will add my notes related to regex use in day to day development.

https://regex101.com/

email Validation Regex, Picked up from Angular Js Code

^(?=.{1,254}$)(?=.{1,64}@)[-!#$%&’*+\/0-9=?A-Z^_`a-z{|}~]+(\.[-!#$%&’*+\/0-9=?A-Z^_`a-z{|}~]+)*@[A-Za-z0-9]([A-Za-z0-9-]{0,61}[A-Za-z0-9])?(\.[A-Za-z0-9]([A-Za-z0-9-]{0,61}[A-Za-z0-9])?)*$

in-built angularJs email validation, which has following length limit :

64-Chars@63-Chars.63-Chars (local-part@domain-part) (as per the RFC : IETF )

If only to have numbers and dots in a string, usually on version matches 

^[0-9,.]*$

 

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