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Online Test for Regular Expressions

RegExp Tester

A regular expression is a special string (pattern) written in a formal language that can help to find strings in a second part of text (haystack). This tool is a regular expression tester, it can help in improving your regexp to find out errors or simply new ways to write them down.


Your current ip is

3.141.24.134

Princeton%2C%20NJ - US

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