Regular Expressions 101

1st Alternative(\/)(?=\*)(?:\*)((?:\1|[\s\S])*?)(?:\*)\1

Group 1(\/)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Positive Lookahead(?=\*)

\*the literal * (42₁₀ / 52₈ / 2A₁₆)

Non-Capturing Group(?:\*)

\*the literal * (42₁₀ / 52₈ / 2A₁₆)

Group 2((?:\1|[\s\S])*?)

Non-Capturing Group(?:\1|[\s\S])*?

*?repeats the group contents below any number of times:

1st Alternative\1

\1the text saved by group 1

2nd Alternative[\s\S]

Character Class[\s\S]

\sany whitespace character

\Sany non-whitespace character

Non-Capturing Group(?:\*)

\*the literal * (42₁₀ / 52₈ / 2A₁₆)

\1the text saved by group 1

2nd Alternative(?=\/\/(.*))

Positive Lookahead(?=\/\/(.*))

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Group 3(.*)

.*any character (except for line terminators), repeated any number of times

3rd Alternative(\<![\-\-\s\w\>\/]*\>)

Group 4(\<![\-\-\s\w\>\/]*\>)

\<the literal < (60₁₀ / 74₈ / 3C₁₆)

!the literal ! (33₁₀ / 41₈ / 21₁₆)

Character Class[\-\-\s\w\>\/]*

*matches any number of characters from the set below:

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

\sany whitespace character

\wany word character

\>the literal > (62₁₀ / 76₈ / 3E₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

\>the literal > (62₁₀ / 76₈ / 3E₁₆)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

(\/)(?=\*)(?:\*)((?:\1|[\s\S])*?)(?:\*)\1|(?=\/\/(.*))|(\<![\-\-\s\w\>\/]*\>)

New

/*
something
*/

/* something */

/*
 * // something
 *
 */

/*/something/*/

 // teste

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