CODEWITHSUNDEEP
javascriptc#asp.netregexrazor
Mike
Mike

Reputation: 235

Make Email Regex Comma Delimited

I have the following regular expression to validate a single email address. How do I make this regex accept a comma delimited list of email addresses?

^(([A-Za-z0-9]+_+)|([A-Za-z0-9]+\-+)|([A-Za-z0-9]+\.+)|([A-Za-z0-9]+\++))*[A-Za-z0-9]+@((\w+\-+)|(\w+\.))*\w{1,63}\.[a-zA-Z]{2,6}$

I am placing the regex within an input tag using a razor view:

<input data-val="true" data-val-length="Email field exceeds maximum length of 50" data-val-length-max="50" data-val-regex="Email-Address is invalid" data-val-regex-pattern="^(([A-Za-z0-9]+_+)|([A-Za-z0-9]+\-+)|([A-Za-z0-9]+\.+)|([A-Za-z0-9]+\++))*[A-Za-z0-9]+@((\w+\-+)|(\w+\.))*\w{1,63}\.[a-zA-Z]{2,6}$" id="Email" name="Email" type="text" value="">

Upvotes: 2

Views: 240

Answers (1)

user557597
user557597

Reputation:

If you just have interior optional comma separated list, its usually done like
(?:my regex)(?:,my regex)* 

 #  ^(?:[A-Za-z0-9]+[_.+-]+)*[A-Za-z0-9]+@(?:\w+[.-]+)*\w{1,63}\.[a-zA-Z]{2,6}(?:,(?:[A-Za-z0-9]+[_.+-]+)*[A-Za-z0-9]+@(?:\w+[.-]+)*\w{1,63}\.[a-zA-Z]{2,6})*$

 ^ 
 (?: [A-Za-z0-9]+ [_.+-]+ )*
 [A-Za-z0-9]+ 
 @
 (?: \w+ [.-]+ )*
 \w{1,63} \. [a-zA-Z]{2,6} 
 (?:
      ,
      (?: [A-Za-z0-9]+ [_.+-]+ )*
      [A-Za-z0-9]+ 
      @
      (?: \w+ [.-]+ )*
      \w{1,63} \. [a-zA-Z]{2,6} 
 )*
 $

Upvotes: 2

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