javascript--Regular Expression (REGEXP, String) (not completed)

In JavaScript, the regular expression consists of two parts: the matching pattern text of the regular expression, and the modifier that matches the pattern text;

Modifier:

Modifier	Description
I	Ignore case
G	Perform a global match
M	Perform multi-line matching

The matching pattern text includes the following:

Parentheses: Finds characters in a range:

(Red|blue|green)

expression
[abc]	any one of the brackets can be
[^abc] /td>
[0-9]	number 0-9 can be
One of three

Metacharacters: A character with a special meaning

The

metacharacters	description
.	finds a single character, in addition to line breaks and line terminators.
\w	to find word characters.
\w	to find non-word characters.
\d	to find numbers.
\d	to find non-numeric characters.
\s	to find white space characters.
\s	to find non-whitespace characters.
\b	matches the word boundary.
\b	matches non-word boundaries.
\	find NUL characters.
\ n	find line breaks.
\f	Find a page break.
\ r	find a carriage return.
\ t	find tabs.
\v	to find vertical tabs.
\xxx	to find characters that are specified in octal number XXX.
\xdd	to find the characters specified in hexadecimal digits dd.
\uxxxx	finds Unicode characters that are specified in hexadecimal number xxxx.

javascript--Regular Expression (REGEXP, String) (not completed)