Regular Expressions 101

Group 1((?:"pin"\s*:\s*"|"secretCode"\s*:\s*"|<pin>|<secretCode>))

Non-Capturing Group(?:"pin"\s*:\s*"|"secretCode"\s*:\s*"|<pin>|<secretCode>)

1st Alternative"pin"\s*:\s*"

"pin"the literal text "pin" (case sensitive)

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

:the literal : (58₁₀ / 72₈ / 3A₁₆)

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

"the literal " (34₁₀ / 42₈ / 22₁₆)

2nd Alternative"secretCode"\s*:\s*"

"secretCode"the literal text "secretCode" (case sensitive)

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

:the literal : (58₁₀ / 72₈ / 3A₁₆)

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

"the literal " (34₁₀ / 42₈ / 22₁₆)

3rd Alternative<pin>

<pin>the literal text <pin> (case sensitive)

4th Alternative<secretCode>

<secretCode>the literal text <secretCode> (case sensitive)

Character Class[0-9]{4}

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

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

Non-Capturing Group(?:("|<\/pin>|<\/secretCode>))

Group 2("|<\/pin>|<\/secretCode>)

1st Alternative"

"the literal " (34₁₀ / 42₈ / 22₁₆)

2nd Alternative<\/pin>

<the literal < (60₁₀ / 74₈ / 3C₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

pin>the literal text pin> (case sensitive)

3rd Alternative<\/secretCode>

<the literal < (60₁₀ / 74₈ / 3C₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

secretCode>the literal text secretCode> (case sensitive)

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

((?:"pin"\s*:\s*"|"secretCode"\s*:\s*"|<pin>|<secretCode>))[0-9]{4}(?:("|<\/pin>|<\/secretCode>))

New

{
"pin":"0000",
"secretCode":"0000"
}
<xml>
<pin>0000</pin>
<secretCode>0000</secretCode>
</xml>