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13. JS Forms

Module 1 · Media Course's Objectives
Module 2 · Media Forms
Module 3 · Media Reset and Submit
Module 4 · Media Input Attributes
Module 5 · Media Validate a basic form
Module 6 · Media Checkvalidity
Module 7 · Media Invalid Event
Module 8 · Media Validity
Module 9 · Media Custom error messages
Module 10 · Media Form Pseudos
Module 11 · Media Validate the cv App
Module 12 · Media Validating string
Module 13 · Media Regex
Module 14 · Media The telephone number pattern
Module 15 · Media Literal
Module 16 · Media Alternatives Regex
Module 17 · Media Alternatives and optionals
Module 18 · Media The Mohammed's Name problem
Module 19 · Media Metacharacters
Module 20 · Media Character Sets You are here
Module 21 · Media Quantifiers
Module 22 · Media Full name regex problem
Module 23 · Media Validate Password pattern
Module 24 · Media Validate German cellphone number
Module 25 · Media Validate email address
Module 26 · Media Check Valid Url address
Module 27 · Media Boundary
Module 28 · Media Who loves bears?
Module 29 · Media Match
Module 30 · Media Modifiers
Module 31 · Media Facebook vs Twitter
Module 32 · Media The Pattern attribute
Module 33 · Media Form Attributes

Close the course

Module 20 of 33 · Media

Character Sets

Kostas Diakogiannis

Working with character sets

A character set, sets available all the possible characters that could be potentially used for a specific character in a pattern. That being said you can specify that you accept one character in your pattern to hold letters between E and K. You can do that by typing [E-K].

Same applies to numbers also as you can see with the picture above.

Characters sets can also be combined. For example:

[0-5P-Q] => this matches a characters if it is a number between 0 and 5 (both included), or a letter between P and Q.

Bear in mind that a character set represents only one character in your pattern! If you want this pattern to expand to many characters read further!

Character Sets

13. JS Forms

Instructions

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