Test regular expression in your code

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Online regular expression tester

A regular expression, also known as a rational expression, is a string of characters that defines a search pattern and is frequently used in “find and replace”-like operations when matching patterns with strings.
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A more general method of matching patterns with character sequences is through regular expressions. Every programming language, including C++, Java, and Python, uses it. The greatest regular expression tester is necessary to test this expression, nevertheless.

You can check your regular expressions against any entry of your choice with our free regular expression tester, which highlights all matches. For expanded capabilities, it is JavaScript-based and makes use of the XRegExp library.

Features of regex tester

Formats

Free online regular expression tester makes the statement more professional or provides an elegantly structured statement.

Compatible

To test your regular expression, use this instant regular expression tester online, which is compatible with Windows, MAC, Linux, Chrome, Firefox, Edge, and Safari.

Absolutely Free

No signup and no registration process required, use free of cost!

How to use regex tester?

1Enter the existing expression into the big text box that says “Enter/paste regular expression”.
2Enter the string or character that you want to find.
3After that, click on the button called “Test”.
4Further, you can easily share, download and copy the result.
1Enter the existing expression into the big text box that says “Enter/paste regular expression”.
2Enter the string or character that you want to find.
3After that, click on the button called “Test”.
4Further, you can easily share, download and copy the result.

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Frequently asked questions

What is a regular expression?

A string of characters known as a regular expression defines a search pattern. String searching algorithms employ this pattern to find or replace text. Validating an IP address or an email address may be helpful.

Many programming languages’ standard libraries have regex support. Each programming language has a unique regex engine, and each language implements regular expressions slightly differently.

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Along with the Regex tester, we also have many effective yet easy-to-use tools like string escape online, free online sql escape, iso country list, list of states in usa, and canada territories. Additionally, all of these technologies produce accurate results quickly.

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