JS How to test if a string is only an abbreviation?

Any JS Regex expert that could help me return true if the word is only an abbreviation or else false?

Tried this regex.

/([a-z]{1}.)/gi

But it also returns true for strings like.

• A..
• A.B
• B.BA..
• Greg D. Bot

I’m trying to formulate a regex that could only return true for the following:

• A.B.
• A.B.C.
• A.B.C.D.

And so on..

Answer

Dubious definitions of what counts as an abbreviation aside, the rules are need are:

• Anchored to start of string
• Anchored to end of string
• Matches a exactly 1 letter followed by a period any one or more times

So:

/^([a-z].)+$/i

There’s no need for it to be global (because you want the entire string to match, not to find matches anywhere inside a string), and there’s no need to say {1} because that is the default.