Introduction to Regular Expressions (Microsoft)--8. Special characters

Special characters
There are a number of metacharacters that require special processing when trying to match them. To match these special characters, you must first escape the characters, which means that you use a backslash () earlier. These special characters and their meanings are given in the following table:
Special Character description
$ matches the end position of the input string. If you set the Multiline of the RegExp object
Property, the $ also matches the ' or '. To match the $ character itself, use $.
() marks the start and end position of a subexpression. The subexpression can be obtained for later use.
To match these characters, use (and).
* Match the preceding subexpression 0 or more times. To match the * character, use the *.
+ matches the preceding subexpression one or more times. to match the + character, use the +.
. Matches any single character except a newline character. to match., please use the.
Marks the beginning of a bracket expression. To match [, use [.
? Matches the preceding subexpression 0 or more times, or indicates a non-greedy qualifier. Want to match?
characters, please use?.
Marks the next character as either a special character, or a literal character, or a forward reference, or octal
The escape character. For example, ' n ' matches the character ' n '. ' Matches a newline character. Sequence of ' horses '
With "", and ' ("Match" ().
^ matches the start position of the input string, unless used in a bracket expression, at which point it represents
Does not accept the character set combination. To match the ^ character itself, please use ^.
{marks the beginning of a qualifier expression.} To match {, use the {.
| Indicates a choice between two items. to match |, use |.