Regex Tester正则表达式测试

Test regular expressions and see matches live.

实时测试正则表达式，查看匹配数量与命中内容，方便调试抓取与替换规则。

What is Regex Tester?正则表达式测试 是什么？

A regex tester runs your regular expression against sample text and highlights every match live, so you can iterate on a pattern without editing code. It supports flags for case-insensitivity, multiline and global matching, shows capture groups, and reports syntax errors as you type. All matching runs locally in your browser.

正则测试器用你的正则表达式实时匹配示例文本并高亮所有结果，让你不写代码就能调好 Pattern。它支持忽略大小写、多行、全局等标志位，展示捕获组，并在输入时即报告语法错误。匹配全部在浏览器本地执行。

How to use regex tester如何使用 正则表达式测试

1. Enter your regular expression in the pattern box, without the surrounding slashes.
2. Paste the sample text you want to match against.
3. Toggle flags such as case-insensitive, multiline or global as needed.
4. Read the highlighted matches and the capture groups, then copy the finished pattern.

1. 在表达式框输入正则，不要带两侧斜杠。
2. 粘贴要匹配的示例文本。
3. 按需开启忽略大小写、多行、全局等标志。
4. 查看高亮匹配与捕获组，然后复制最终表达式。

Common uses常见用途

• Build and test a pattern before pasting it into application code
• Extract numbers, emails, dates or IDs from a log file or a data export
• Debug why an existing pattern matches too much or too little
• Verify capture groups before wiring them into a replace or a parser

• 把调好的 Pattern 再粘进应用代码
• 从日志或导出数据里提取数字、邮箱、日期、ID
• 调试已有表达式匹配过多或过少的问题
• 在接入替换或解析器前，先确认捕获组

FAQ常见问题