ECMAScript simple regex for email validation

Match emoji in emoji-zwj-sequences.txt

emoji-test.txt

Validates that a given string is a number of up to 15 integer digits and up to 2 decimal digits. Group separators could be either comma or space class but can't be mixed. Decimal separator could be either comma (if comma was not a group delimiter) or dot. This variation uses small captures for mode...

Case insensitive (of course) All words can all be separated by nothing, spaces, periods, slashes, dashes, or underscores. (So "PO Box 123", "P.O. Box 123", "PO-Box 123", "PO_Box123", etc. all match.) Some valid abbreviations are P/Post/Postal, O/Off/Office, and B/Box/Bx/Bin (as well as N/No/Num/Numb...

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(.)\/\/(.)

Pattern matching and extracting color code formats using RegEx. https://github.com/Kyza/color-regex/

Not only validates valid date/time, but also the number of days in a month (including leap year), and both Z and UTC offset.

text has numbers

Matches the data sent by the twitch IRC and captures into various groups

By inserting this regex in a programming language to test it against Codeforces 1800A you'll solve the task

You can use this regular expression to identify any type of Telegram link. It doesn't matter whether it is t.me or telegram.me. Links including "joinchat" are also accepted.

Regex to detect and extract detail from matrix.to

匹配带引号内容，被引号包含的内容 结构($x) ((前引号)(内容)(后引号)) 整体内容(包含引号)...

Sustitution of comments (one line) // Example ~ input (before) ↓↓ : // comment textplain other-text ...

This regex match group (country & Prefix) Separated by spaces or \s+ ↓↓ Example ↓↓ Australia 61 Dominica 1 (767) República Dominicana 1 (809/829/849) ...

This regex is to match Ascending or descending order of 8 digit number

Capturing the content of column names which are duplicate in nature to extract the actual name and suffix ("right" / "left")

ragex solution for free code camp positive-and-negative-lookahead first assertion is (?=\w{6,}) where im matching for any char (a-z0-9_) and repeating the char matching 6 times, in other words, verifying that this word has 6 char being them a-z or digits. the second assertion was more difficult to...