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JavaScript Regular Expressions in JavaScript Reformatting User Input A Better Telephone Number Validator

understanding the reguler expression deeper from the video

I dont quite understand why we used /D* if a-z would be allowed to be added and why we added that in the first place:

the regex: ^\D*\d{3}\D*\d{3}\D*\d{4}\D*$

1 Answer

Sean T. Unwin
Sean T. Unwin
28,660 Points

\D means anything except a number which would allow letters.

This is briefly covered around the 2min mark in the video.