Regular Expressions 101

Explanation

Pro

Non-Capturing Group(?:\/\/\/.*)?

?repeats the group contents below at most once:

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

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

facebookthe literal text facebook (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

comthe literal text com (case sensitive)

Non-Capturing Group(?:\/[^ "]*)?

?repeats the group contents below at most once:

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Negated Character Class[^ "]*

*matches any number of characters outside the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

"the literal " (34₁₀ / 42₈ / 22₁₆)

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

Match Information

Detailed match information will be displayed here automatically.

Quick Reference

25 tokens

Regular Expression

(?:\/\/\/.*)?facebook\.com(?:\/[^ "]*)?

New

 <a href="www.https://www.facebook.com/xcvxdfddfd/dsfdsf/dsfdsf" title="xxx na facebooku" target="_blank"><i class="fab fa-facebook-square fa-lg" aria-hidden="true"></i>xxx</a>

Extraction

 <a href="www.https://www.facebook.com/xcvxdfddfd/dsfdsf/dsfdsf" title="xxx na facebooku" target="_blank"><i class="fab fa-facebook-square fa-lg" aria-hidden="true"></i>xxx</a>