Regular Expressions 101

Group 1([0-2][0-9]|[3][0|1])

1st Alternative[0-2][0-9]

Character Class[0-2]

0-2one character from 0 (48₁₀) to 2 (50₁₀)

Character Class[0-9]

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

2nd Alternative[3][0|1]

Character Class[3]

3the literal 3 (51₁₀ / 63₈ / 33₁₆)

Character Class[0|1]

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

|the literal | (124₁₀ / 174₈ / 7C₁₆)

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

Character Class[.]

.the literal . (46₁₀ / 56₈ / 2E₁₆)

Group 2([0][1-9]|[1][1|2])

1st Alternative[0][1-9]

Character Class[0]

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

Character Class[1-9]

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

2nd Alternative[1][1|2]

Character Class[1]

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

Character Class[1|2]

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

|the literal | (124₁₀ / 174₈ / 7C₁₆)

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

Character Class[.]

.the literal . (46₁₀ / 56₈ / 2E₁₆)

Group 3([0-9]{4})

Character Class[0-9]{4}

{4}matches exactly 4 characters from the set below:

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

Character Class[T]

Tthe literal T (84₁₀ / 124₈ / 54₁₆) (case sensitive)

Group 4([0|1][0-9]|[2][0-3])

1st Alternative[0|1][0-9]

Character Class[0|1]

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

|the literal | (124₁₀ / 174₈ / 7C₁₆)

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

Character Class[0-9]

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

2nd Alternative[2][0-3]

Character Class[2]

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

Character Class[0-3]

Group 5([:][0-5][0-9]){2}

Character Class[.]

Character Class[0-9]{2}

Global pattern flags

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

No unit tests · Add a test to get started

Search reference

Regular Expression

([0-2][0-9]|[3][0|1])[.]([0][1-9]|[1][1|2])[.]([0-9]{4})[T]([0|1][0-9]|[2][0-3])([:][0-5][0-9]){2}[.][0-9]{2}

Unit Tests

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