Regular Expressions 101

1st Alternative(?<=\"fileAssetId\":\")[a-fA-F0-9-]+?(?=\")

Positive Lookbehind(?<=\"fileAssetId\":\")

\"the literal " (34₁₀ / 42₈ / 22₁₆)

fileAssetIdthe literal text fileAssetId (case sensitive)

\"the literal " (34₁₀ / 42₈ / 22₁₆)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\"the literal " (34₁₀ / 42₈ / 22₁₆)

Character Class[a-fA-F0-9-]+?

+?matches at least one character from the set below:

a-fone character from a (97₁₀) to f (102₁₀) (case sensitive)

A-Fone character from A (65₁₀) to F (70₁₀) (case sensitive)

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

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Positive Lookahead(?=\")

\"the literal " (34₁₀ / 42₈ / 22₁₆)

2nd Alternative(?<=\"filename\":\").+?(?=\")

Positive Lookbehind(?<=\"filename\":\")

\"the literal " (34₁₀ / 42₈ / 22₁₆)

filenamethe literal text filename (case sensitive)

\"the literal " (34₁₀ / 42₈ / 22₁₆)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\"the literal " (34₁₀ / 42₈ / 22₁₆)

.+?any Unicode character (except for line terminators), repeated at least once

Positive Lookahead(?=\")

\"the literal " (34₁₀ / 42₈ / 22₁₆)

Global pattern flags

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

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Search reference

Regular Expression

(?<=\"fileAssetId\":\")[a-fA-F0-9-]+?(?=\")|(?<=\"filename\":\").+?(?=\")

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