Regular Expressions 101

Pro

^start of line

Group 1( *)

*the literal (32₁₀ / 40₈ / 20₁₆) , repeated any number of times

Group 2("[^"]+": )?

?repeats the group contents below at most once:

"the literal " (34₁₀ / 42₈ / 22₁₆)

Negated Character Class[^"]+

+matches at least one character outside the set below:

"the literal " (34₁₀ / 42₈ / 22₁₆)

": the literal text ":

Group 3(\[(?:\s+\d+,)*\s+\d+\s+\])

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

Non-Capturing Group(?:\s+\d+,)*

*repeats the group contents below any number of times:

\s+any whitespace character, repeated at least once

\d+a digit, repeated at least once

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\s+any whitespace character, repeated at least once

\d+a digit, repeated at least once

\s+any whitespace character, repeated at least once

\]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

^( *)("[^"]+": )?(\[(?:\s+\d+,)*\s+\d+\s+\])

New

{
  "foo": "bar",
  "oneLine": [
    1,
    2,
    3
  ],
  "multipleLines": [
    {
      "name": "X",
      "alsoOneLine": [
        4,
        5,
        6
      ],
      "inner": [
        [
          1,
          2,
          3
        ],
        [
          4,
          5,
          6
        ]
      ]
    },
    {
      "name": "Y"
    }
  ]
}

Extraction

{
  "foo": "bar",
  "oneLine": [
    1,
    2,
    3
  ],
  "multipleLines": [
    {
      "name": "X",
      "alsoOneLine": [
        4,
        5,
        6
      ],
      "inner": [
        [
          1,
          2,
          3
        ],
        [
          4,
          5,
          6
        ]
      ]
    },
    {
      "name": "Y"
    }
  ]
}