Regular Expressions 101

Group 1(https?:\/\/assets\.example\.com\/images\/[a-zA-Z0-9]{8,9})

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)

assetsthe literal text assets (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

examplethe literal text example (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

comthe literal text com (case sensitive)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

imagesthe literal text images (case sensitive)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Character Class[a-zA-Z0-9]{8,9}

{8,9}matches between 8 and 9 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)

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

mthe literal m (109₁₀ / 155₈ / 6D₁₆) (case sensitive)

Group 2(\/[a-zA-Z0-9]{8,9}\.jpg)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Character Class[a-zA-Z0-9]{8,9}

{8,9}matches between 8 and 9 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)

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

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

jpgthe literal text jpg (case sensitive)

Global pattern flags

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

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

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26 tokens

Regular Expression

(https?:\/\/assets\.example\.com\/images\/[a-zA-Z0-9]{8,9})m(\/[a-zA-Z0-9]{8,9}\.jpg)

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