Regular Expressions 101

Character Class[[Video:(http)\:\/\/[a-zA-Z0-9\-\.]+

+matches at least one character from the set below:

[the literal [ (91₁₀ / 133₈ / 5B₁₆)

Vthe literal V (86₁₀ / 126₈ / 56₁₆) (case sensitive)

ithe literal i (105₁₀ / 151₈ / 69₁₆) (case sensitive)

dthe literal d (100₁₀ / 144₈ / 64₁₆) (case sensitive)

ethe literal e (101₁₀ / 145₈ / 65₁₆) (case sensitive)

othe literal o (111₁₀ / 157₈ / 6F₁₆) (case sensitive)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

(the literal ( (40₁₀ / 50₈ / 28₁₆)

hthe literal h (104₁₀ / 150₈ / 68₁₆) (case sensitive)

tthe literal t (116₁₀ / 164₈ / 74₁₆) (case sensitive)

pthe literal p (112₁₀ / 160₈ / 70₁₆) (case sensitive)

)the literal ) (41₁₀ / 51₈ / 29₁₆)

\:the literal : (58₁₀ / 72₈ / 3A₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

[the literal [ (91₁₀ / 133₈ / 5B₁₆)

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

0-9one character from 0 (48₁₀) to 9 (57₁₀)

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[a-zA-Z]{2,3}

{2,3}matches between 2 and 3 characters from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

Group 1(\/\S*)?

?repeats the group contents below at most once:

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

\S*any non-whitespace character, repeated any number of times

4the literal 4 (52₁₀ / 64₈ / 34₁₆)

Global pattern flags

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

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Search reference

Regular Expression

[[Video:(http)\:\/\/[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(\/\S*)?4

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