const regex = new RegExp(/^a...s$/); console.log(regex.test('alias')); // true Run Code In the above example, the string alias matches with the RegEx pattern /^a...s$/. Here, the test() method is used to check if the string matches the pattern. There are several other ...
Check out moreusage examples on GitHub ⇨. Features Addsnew regex and replacement text syntax, including comprehensive support fornamed capture. Addsnew regex flags:s, to makedot match allcharacters;x, forfree-spacingand line comments;n, forexplicit capturemode; andA, forastralmode (full 21-bit...
Regular Expression Tester with highlighting for Javascript and PCRE. Quickly test and debug your regex.
is.js - Check types, regexps, presence, time and more. FieldVal - multipurpose validation library. Supports both sync and async validation. Funval - Data validation using functions interfaces (support TypeScript). vest - 🦺 Declarative form validation framework inspired by unit testing.Keyboard...
{{flavors[reModel.flavor].external}} regex quick reference (hide): [abx-z] One character of: a, b, or the range x-z [^abx-z] One character except: a, b, or the range x-z a|b a or b a? Zero or one a's (greedy) a?? Zero or one a's (lazy) a* Zero or more a'...
Regex Online Cyrilex is an online regex checker, it allows to easily test and debug regex. This avoids wasting time writing the few lines of code needed to do the tests. A regex visualizer and a regex generator help you to understand and debug your regexes. This tool also allows you ...
RegEx Pal From Dan's Tools Web Dev Conversion Encode/Decoders Formatters Internet Join LoginRegular Expression flags infinite //g Test String Substitution Save this Regex Name: Description: Save Top Regular Expressions Cheat Sheet...
Regex Match Replacer Email Extractor URL Extractor Number Extractor List Merger List Zipper List Intersection List Difference Printf Formatter Text Grep Text Head Text Tail Line Range Extractor Word Sorter Word Wrapper Word Splitter Add Line Numbers Add Line Prefixes Add Line Suffixes Append Prefix and...
5. Regex Trim FunctionWrite a JavaScript program that works as a regular expression trim function (string). Click me to see the solution6. Count Words in StringWrite a JavaScript program to count number of words in string. Note : - Remove white-space from start and end position. - ...
Example:javascript const uri = "https://www.example.com"; const regex = /^(http|https):\/\/[^ "]+$/; if (regex.test(uri)) { // URI is valid } else { // URI is invalid } Check for Illegal Characters: Before encoding, ensure the URI doesn’t contain characters that should no...