Question

I have a regex to match email addresses in javascript. Lets see an example:

var email  = "[e-mail] (A,B); [e-mail] (C,D); [e-mail] (E,F);";
var emails = email.match(/([a-zA-Z0-9._-]+@[a-zA-Z0-9._-]+\.[a-zA-Z0-9._-]+)/gi);

This will return me all the emails in the var emails.

Now, I have a string:

var initials = "(A,B)";

And I would like to get only the email before the initials value;

If the var initials is “(A,B)”, then I would like to get only the [e-mail] email address.

Thank you a lot for your help!

Answer 1

JavaScript:

var input = "[e-mail] (A,B); [e-mail] (C,D); [e-mail] (E,F);";
var initials = "(A,B)";
var email = input.match(new RegExp("([a-zA-Z0-9]+(?:[-._][a-zA-Z0-9]+)*@[a-zA-Z0-9]+(?:[-.][a-zA-Z0-9]+)*)(?=\\s*" + initials.replace(/([()])/g, "\\$1") + ")"))[0];
print(email);

Output:

[e-mail]

Test this code here.