Regular Expressions 101

Group 1(https?:\/\/(\w+\.)+\w+(\/[\w\-_]+)+)

httpthe literal text http (case sensitive)

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

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Group 2(\w+\.)+

+repeats the group contents below at least once:

\w+any word character, repeated at least once

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\w+any word character, repeated at least once

Group 3(\/[\w\-_]+)+

+repeats the group contents below at least once:

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Character Class[\w\-_]+

+matches at least one character from the set below:

\wany word character

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

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Regular Expression

(https?:\/\/(\w+\.)+\w+(\/[\w\-_]+)+)

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