Regular Expressions 101

Pro

1st Alternative^[a-z]+:\/\/

^start of string

Character Class[a-z]+

+matches at least one character from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case insensitive)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

2nd Alternative\.?[^/.\s]+

\.?optionally matches the literal . (46₁₀ / 56₈ / 2E₁₆)

Negated Character Class[^/.\s]+

+matches at least one character outside the set below:

/the literal / (47₁₀ / 57₈ / 2F₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

\sany whitespace character

Global pattern flags

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

y modifier: sticky. Matches only at the current search position instead of scanning ahead

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

Detailed match information will be displayed here automatically.

26 tokens

^[a-z]+:\/\/|\.?[^/.\s]+

http://test.test.again.mail.yahoo.com/blah/blah

http://test.test.again.mail.yahoo.com/blah/blah