This regex is used to find all valid urls in a list of urls.
/^(https?:\/\/)?([\da-z\.-]+)\.(c{2,6})([\/\w \.-]*)*\/?$/gim- Anchors
- Character Classes
- Bracket Expressions
- Quantifiers
- Flags
- Boundaries
- Look-ahead and Look-behind
^http matches any string that starts with http
html$ matches a string that ends with html
^http$ exact string match (starts and ends with http)
http matches any string that has the text http in it
\d matches a single digit 0-9
\w matches a word character a-z, A-Z and _
. matches any character -> Try it!
[\da-z\.-] matches a string with one character between 0-9, a-z, . or -
[\/\w \.-] matches a string with one character \, \w, . and -
\w* matches a string that has ab followed by zero or more word characters
[\da-z\.-]+ matches a string that has one or more [\da-z\.-] match
https? matches a string that has http followed by zero or one s
http{2} matches a string that has htt followed by 2 p
http{2,} matches a string that has htt followed by 2 or more p
[a-z\.]{2,6} matches a string that has any character a-z or . between 2 up to 5 times
i case insensitvity on
g global: find all matches
m multi-line: $ and ^ match line beginnings and ends
\bhttp\b performs a "whole words only" search for http
\Bhttp\B matches only if the pattern is fully surrounded by word characters
https://github.com/bradleypaul Full Stack Developer with 5+ years of experience of programming and teaching looking for opportunities using JavaScript and Python. Based primarily in the Austin area but open to remote.