QuestTree

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.

概览

收录于

2026年3月17日

学科与领域

computer-science-fundamentals · compiler-design

年级范围

九年级（高一）–十二年级（高四）

页面类型

Tool

关键词

regexregex testerregular expressiondebuggerpcrephpgolangjavajavascriptpython.netc#rust

简介

Regex101 Overview

  • Core Functionality: An online tool designed for building, testing, and debugging regular expressions.
  • Key Features:
    • Real-time syntax highlighting.
    • Detailed explanations of regex patterns.
    • Integrated cheat sheet for quick reference.
  • Supported Languages:
    • PHP (PCRE)
    • Python
    • Go
    • JavaScript
    • Java
    • C#/.NET
    • Rust
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