Free Tool

Regex Tester

Test JavaScript regular expressions instantly. Enter a pattern, choose flags, and see matches in your text.

Pattern

//g

global gignore case imultiline m

Test Text

Matches

9 matches

Helloindex 0

Ihorindex 6

Formatterindex 43

Decoderindex 58

Regexindex 71

Testerindex 77

Tryindex 86

Reactindex 110

Reduxindex 145

Preview

Hello Ihor,

DevDrills has tools like JSON Formatter, JWT Decoder, and Regex Tester.

Try matching words like React, TypeScript, JavaScript, and Redux.

Tip:This tool uses JavaScript regular expressions. The pattern is tested with the browser's native RegExp behavior.

Learn regex

Common regex mistakes in JavaScript

Learn about escaping, global flags, greedy matching, multiline mode, and common regex problems.

Read article →

Regex Tester

Test Text

Matches

Preview

Common regex mistakes in JavaScript

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