Regular Expressions 101

Pro

httpthe literal text http (case sensitive)

s?optionally matches the literal s (115₁₀ / 163₈ / 73₁₆) (case sensitive)

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

Group 1(\w{4,})

\w{4,}any word character, repeated at least 4 times

Positive Lookahead(?=(?:\.\w{2,3})+\/)

Non-Capturing Group(?:\.\w{2,3})+

+repeats the group contents below at least once:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\w{2,3}any word character, repeated between 2 and 3 times

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Global pattern flags

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

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

https?.*?(\w{4,})(?=(?:\.\w{2,3})+\/)

New

let str = 'https://www.google.com.ua/images/branding/product/ico/googleg_lodp.ico'
let str1 = 'https://www.google.com/images/branding/product/ico/googleg_lodp.ico'
let str2 = 'https://books.google.com.ua/images/branding/product/ico/googleg_lodp.ico'
http://test.google.com/test.google.com/
http://a.b.c.d.test.google.com/test.google.com/