Regular Expression |R

Regular Expressio

'\s' : To accept the single white space.

eg: To accept the space along with text need to use.

([a-z]+\s)+

var validate_pattern_azdotspace = "([a-z]+[\\.\\s]?)*[a-z]+";

if you are using this with Validate.js lib. consider of adding additional backslash with '\s' Eg: '\\s'.

Use Case: Alphanumeric with space and dot. The expression must contain an alphabet.

'(?=.*[a-z])([a-z0-9]+[\\.\\s]?)*[a-z0-9]+[\\s]?'

Different blocks in expression

1. (?=.*[a-z])
2. ([a-z0-9]+[\\.\\s]?)*
3. [a-z0-9]+[\\s]?

Block 1

Note:

if regex is used in javascript, need to add an escape character 

eg : "\s" for single white space, it can be represented in javascript "\\s"
the text should not contain an only numbers, it can accept numbers in between