Regular Expressions 101

Pro

Group 1(<am)

<amthe literal text <am (case sensitive)

Group 2((?:(?!<am|<\/boy>|insta).)*insta.*?)

Non-Capturing Group(?:(?!<am|<\/boy>|insta).)*

*repeats the group contents below any number of times:

Negative Lookahead(?!<am|<\/boy>|insta)

1st Alternative<am

<amthe literal text <am (case sensitive)

2nd Alternative<\/boy>

<the literal < (60₁₀ / 74₈ / 3C₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

boy>the literal text boy> (case sensitive)

3rd Alternativeinsta

instathe literal text insta (case sensitive)

.any character (except for line terminators)

instathe literal text insta (case sensitive)

.*?any character (except for line terminators), repeated any number of times

Group 3(<\/boy>)

<the literal < (60₁₀ / 74₈ / 3C₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

boy>the literal text boy> (case sensitive)

Global pattern flags

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

Detailed match information will be displayed here automatically.

26 tokens

Regular Expression

(<am)((?:(?!<am|<\/boy>|insta).)*insta.*?)(<\/boy>)

New

I <am a insta good </boy>.Why,I <am a insta bad </boy>.Where,I <am a naughty </boy>.How,I <am a soft </toy>.Don't know,I <am a very good </boy>.Why so, I <am a very bad </boy>.That's why

Substitution

I <am a insta good </boy>.Why,I <am a insta bad </boy>.Where,I <am a naughty </boy>.How,I <am a soft </toy>.Don't know,I <am a very good </boy>.Why so, I <am a very bad </boy>.That's why