Regular Expressions 101

Positive Lookbehind(?<=^\d{4}/\d{2}/)

^start of line

\d{4}a digit, repeated exactly 4 times

/the literal / (47₁₀ / 57₈ / 2F₁₆)

\d{2}a digit, repeated exactly 2 times

/the literal / (47₁₀ / 57₈ / 2F₁₆)

\d{8}a digit, repeated exactly 8 times

/the literal / (47₁₀ / 57₈ / 2F₁₆)

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

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

(?<=^\d{4}/\d{2}/)\d{8}/

New

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2017/11/24211223/questao10branca-172x300.png