Regular Expressions 101

Pro

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

fracthe literal text frac (case insensitive)

\{the literal { (123₁₀ / 173₈ / 7B₁₆)

\[?optionally matches the literal [ (91₁₀ / 133₈ / 5B₁₆)

Group 1([a-zA-Z1-9\+]{2,})

Character Class[a-zA-Z1-9\+]{2,}

{2,}matches at least 2 characters from the set below:

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

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

1-9one character from 1 (49₁₀) to 9 (57₁₀)

\+the literal + (43₁₀ / 53₈ / 2B₁₆)

\]?optionally matches the literal ] (93₁₀ / 135₈ / 5D₁₆)

\}the literal } (125₁₀ / 175₈ / 7D₁₆)

\{the literal { (123₁₀ / 173₈ / 7B₁₆)

\[?optionally matches the literal [ (91₁₀ / 133₈ / 5B₁₆)

Group 2([a-zA-Z1-9\+]{2,})

Character Class[a-zA-Z1-9\+]{2,}

{2,}matches at least 2 characters from the set below:

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

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

1-9one character from 1 (49₁₀) to 9 (57₁₀)

\+the literal + (43₁₀ / 53₈ / 2B₁₆)

\]?optionally matches the literal ] (93₁₀ / 135₈ / 5D₁₆)

\}the literal } (125₁₀ / 175₈ / 7D₁₆)

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

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.

25 tokens

\\frac\{\[?([a-zA-Z1-9\+]{2,})\]?\}\{\[?([a-zA-Z1-9\+]{2,})\]?\}

New

1.\frac{[a+b]}{xjch}

2.\frac{pqz}{xjch}

1.\frac{[a+b]}{[a+b]}

2.\frac{pqz}{[1+9]}

1.\frac{[a+b]}{xjch}

2.\frac{pqz}{xjch}

1.\frac{[a+b]}{[a+b]}

2.\frac{pqz}{[1+9]}