With this RegExp I can easily check if an email is valid or not:
RegExp(/^([\w-\.]+@([\w-]+\.)+[\w-]{2,4})?$/);
However, this just return true for such addresses:
[email protected]
I also want to accept:
*@example.com
What changes I need to apply on my RegExp?
Thanks in advance
To answer your question literally, you can "augment" your regex:
RegExp(/^([\w.*-]+@([\w-]+\.)+[\w-]{2,4})?$/);
But this is a terrible regex for e-mail validation. Regex is the wrong tool for this. Why do you insist on doing it this way?
@ is in the wrong position and is therefore ignored. Therefore, it doesn't accept any dash before the @.*, of course).A couple of things: to accept *@foo.bar:
var expression = /^([\w-\.*]+@([\w-]+\.)+[\w-]{2,4})?$/;//no need to pass it to the RegExp constructor
But this expression does accept [email protected], but then again, regex and email aren't all too good a friends. But based on your expression, here's a slightly less unreliable version:
var expression = /^[\w-\.\d*]+@[\w\d]+(\.\w{2,4})$/;
There is an expression that validates all valid types of email addresses, somewhere on the net, though. Look into that, to see why regex validating is almost always going to either exclude valid input or be too forgiving
Checking email addresses is not that straightforward, cf. RFC 822, sec 6.1.
A good list of regexes can be found at http://www.regular-expressions.info/email.html, describing tradeoffs between RFC conformance and practicality.
