Question

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:

[e-mail]

I also want to accept:

*@example.com

What changes I need to apply on my RegExp?

Thanks in advance

Answer 1

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 -@-.--, 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