Regular expression for first and last name

Question

For website validation purposes, I need first name and last name validation.

For the first name, it should only contain letters, can be several words with spaces, an

Answer 1

For first and last names theres are really only 2 things you should be looking for:

1. Length
2. Content

Here is my regular expression:

var regex = /^[A-Za-z-,]{3,20}?=.*\d)/

1. Length

Here the {3,20} constrains the length of the string to be between 3 and 20 characters.

2. Content

The information between the square brackets [A-Za-z] allows uppercase and lowercase characters. All subsequent symbols (-,.) are also allowed.