Regular Expressions 101

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

Group 1((\d+|"([^"]|\\")*?")\s*,?\s*)*

*repeats the group contents below any number of times:

Group 2(\d+|"([^"]|\\")*?")

1st Alternative\d+

\d+a digit, repeated at least once

2nd Alternative"([^"]|\\")*?"

"the literal " (34₁₀ / 42₈ / 22₁₆)

Group 3([^"]|\\")*?

*?repeats the group contents below any number of times:

1st Alternative[^"]

Negated Character Class[^"]

"the literal " (34₁₀ / 42₈ / 22₁₆)

2nd Alternative\\"

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

"the literal " (34₁₀ / 42₈ / 22₁₆)

\s*any whitespace character, repeated any number of times

,?optionally matches the literal , (44₁₀ / 54₈ / 2C₁₆)

\s*any whitespace character, repeated any number of times

Negative Lookbehind(?<!,)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\]the literal ] (93₁₀ / 135₈ / 5D₁₆)

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.

25 tokens

Regular Expression

\[((\d+|"([^"]|\\")*?")\s*,?\s*)*(?<!,)\]

New

const arr = [123, "hjhehe", "lala"]
const arr = [123, "hjhehe", "lala",]
const arr = [123, "hjhehe, "lala"]
const arr = [123, "hjhe\"he", "lala"]

const arr = [123, "hjhehe", "lala"]
const arr = [123, "hjhehe", "lala",]
const arr = [123, "hjhehe, "lala"]
const arr = [123, "hjhe\"he", "lala"]