Regex101
Revision | Date | Description |
|---|---|---|
| 25.07.2024 | Init document |
Introduction
Regex101 is an online tool designed to help users create, test, and debug regular expressions (regex). Regular expressions are sequences of characters that define search patterns, typically used for string matching within texts. The website provides several features to facilitate working with regex.
Tool features
Regex Tester: Allows users to write and test their regular expressions against sample text. It highlights matches and provides instant feedback on the regex performance.
Explanation: Breaks down the regular expression into its components, providing a detailed explanation of each part. This helps users understand how their regex works or why it might not be functioning as expected.
Substitution: Supports testing replacement patterns, which can be used to modify matched text according to specified rules.
Flags: Offers options to enable various regex flags, such as case insensitivity, global matching, multi-line mode, etc.
Library: Includes a community-driven library of regex patterns that users can share and explore.
Debugging: Provides tools for step-by-step debugging of regular expressions to pinpoint issues and understand their behavior in detail.
Syntax for Multiple Languages: Supports regex syntax for different programming languages, including JavaScript, Python, PHP, and others, making it a versatile tool for developers working in various environments.