Regular Expressions 101

Pro

httpthe literal text http (case sensitive)

s?optionally matches the literal s (115₁₀ / 163₈ / 73₁₆) (case sensitive)

Character Class[:.]?

?matches at most one character from the set below:

:the literal : (58₁₀ / 72₈ / 3A₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

\s?optionally matches any whitespace character

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Non-Capturing Group(?:\s*[^\/\s.]+)+

+repeats the group contents below at least once:

\s*any whitespace character, repeated any number of times

Negated Character Class[^\/\s.]+

+matches at least one character outside the set below:

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

\sany whitespace character

.the literal . (46₁₀ / 56₈ / 2E₁₆)

Non-Capturing Group(?:\s*\.\s*[^\/\s.]+)*

*repeats the group contents below any number of times:

\s*any whitespace character, repeated any number of times

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\s*any whitespace character, repeated any number of times

Negated Character Class[^\/\s.]+

+matches at least one character outside the set below:

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

\sany whitespace character

.the literal . (46₁₀ / 56₈ / 2E₁₆)

Non-Capturing Group(?:\s*\/\s*[^\/\s]+)*

*repeats the group contents below any number of times:

\s*any whitespace character, repeated any number of times

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

\s*any whitespace character, repeated any number of times

Negated Character Class[^\/\s]+

+matches at least one character outside the set below:

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

\sany whitespace character

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

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25 tokens

https?[:.]?\s?\/\/(?:\s*[^\/\s.]+)+(?:\s*\.\s*[^\/\s.]+)*(?:\s*\/\s*[^\/\s]+)*

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