starting with regexes

Question

disclaimer: entirely new to regexes

I am trying to write a simple regex to validate email strings like this:

/^\w+@\w+\.\w{1,4}/.test(emailstring);

The above should return false for = a@d.abcde but true for a@d.abcd. I need the extension to be limited to four characters {1,4}. But it always returns true for any length of tld extension. What's wrong in the above expression?

Side note: top level domains are not restricted to four characters anyway. — Álvaro González, Aug 23 '16 at 07:42
Since the issue is typical and highly frequent, I suggest that you do the basic exercises at [regexone.com](http://regexone.com). You will get the grasp of regex basics and will be able to handle such issues by yourself. [Lesson 10](http://regexone.com/lesson/line_beginning_end) will be very helpful. — Wiktor Stribiżew, Aug 23 '16 at 07:45

score 3 · Accepted Answer · answered Aug 23 '16 at 07:42

3

Add the end-of-line anchor ($):

/^\w+@\w+\.\w{1,4}$/.test(emailstring);

answered Aug 23 '16 at 07:42

Dmitry Egorov

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starting with regexes

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