- Character class escape: \d, \D, \w, \W, \s, \S - JavaScript - MDN
\w Matches any word character, where a word character includes letters (A–Z, a–z), numbers (0–9), and underscore (_) If the regex is Unicode-aware and the i flag is set, it also matches other Unicode characters that get canonicalized to one of the characters above through case folding \s Matches any whitespace or line terminator
- regex101: build, test, and debug regex
Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP PCRE, Python, GO, JavaScript, Java, C# NET, Rust
- Regex Cheat Sheet - techearl. com
A quick start regex cheat sheet reference guide for regular expressions, including regex syntax, symbols, ranges, grouping, assertions, Unicode handling, and some practical examples Any character except newline With 's', includes newlines Check Unicode modes for differences in \w, \d, etc POSIX does not support these shorthands
- Ultimate Regex Cheat Sheet - KeyCDN Support
This guide provides a regex cheat sheet that you can use as a reference when creating regex expressions We will also go over a couple of popular regex examples and mention a few tools you can use to validate create your regex expressions
- JavaScript RegExp w Class - W3Schools
In JavaScript, a regular expression text search, can be done with different methods With a pattern as a regular expression, these are the most common methods: Example
- Regex Tutorial - A Cheatsheet with Examples - Regextutorial. org
\w matches word characters which include a to z upper and lower case, 0 to 9 and underscore \W matches anything but \w \s matches whitespace like space, tab etc \S matches all but \s Period or dot First see how dot or period works in regex As you can see dot matches all characters, therefore it may be called as wildcard character as it
- Regex Tutorial - How to write Regular Expressions?
A regular expression (regex) is a sequence of characters that define a search pattern Here's how to write regular expressions: Start by understanding the special characters used in regex, such as " ", "*", "+", "?", and more Choose a programming language or tool that supports regex, such as Python, Perl, or grep
- Regexp Tutorial - Shorthand Character Classes - Regular-Expressions. info
\w stands for “word character” It always matches the ASCII characters [A-Za-z0-9_] Notice the inclusion of the underscore and digits In most flavors that support Unicode, \w includes many characters from other scripts There is a lot of inconsistency about which characters are actually included
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