Regular Expressions 101

Group 1([^\/]{2,2})

Negated Character Class[^\/]{2,2}

{2,2}matches exactly 2 characters outside the set below:

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Group 2(www\.[\w-.]*?[\w-]+?(\/[\w-]*?)*?)

wwwthe literal text www (case insensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[\w-.]*?

*?matches any number of characters from the set below:

\wany word character

-the literal - (45₁₀ / 55₈ / 2D₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[\w-]+?

+?matches at least one character from the set below:

\wany word character

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Group 3(\/[\w-]*?)*?

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

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Character Class[\w-]*?

*?matches any number of characters from the set below:

\wany word character

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Group 4(([^\w.\/-]+?)|$)+

+repeats the group contents below at least once:

1st Alternative([^\w.\/-]+?)

Group 5([^\w.\/-]+?)

Negated Character Class[^\w.\/-]+?

+?matches at least one character outside the set below:

\wany word character

.the literal . (46₁₀ / 56₈ / 2E₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

2nd Alternative$

$end of string, or before its final line terminator

Global pattern flags

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

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

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

([^\/]{2,2})(www\.[\w-.]*?[\w-]+?(\/[\w-]*?)*?)(([^\w.\/-]+?)|$)+

New

<p><a href="https://www.w3schools.com/html/"><a href="http://www.w3schools.com/html/">www.w3schools.com</a></p>
<p><a href="https://www.google.com/html/"><a href="http://www.google.com/html/">www.google.com</a>

Regular Expression

Extraction