5.javascript Regular Expressions

Direct volume syntax

/pattern/attributes

Create RegExp Object syntax

New REGEXP (pattern, attributes)

1. Modifiers

I perform a match on case insensitive.

G performs a global match (finds all matches rather than stops after the first match is found).

M performs multi-line matching.

2. Square brackets are used to find characters in a range:

[ABC] find any character between square brackets

[^ABC] Find any characters that are not in square brackets

[0-9] Find any 0-9 number

[A-z] find any A-Z letter

(Red|blue|white) to find any of the specified options

3. Meta-Characters

\. Finds a single character, except line wrapping and line ending characters

\w Finding Word characters

\w Find non-word characters

\d Finding numeric characters

\d finding non-numeric characters

\s finding whitespace

\s Finding non-whitespace

\b Finding word boundaries

\b Matching non-word boundaries

4. quantifiers

5.javascript Regular Expressions