Regex Reference

Common regex patterns reference. Free, instant.

{var rx=new RegExp(patterns[k]);r+=k+': /'+patterns[k]+'/\\n Test: '+(rx.test(input.trim())?'✓ MATCH':'✗ no match')+'\\n\\n'});return r"}'>

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Common Patterns

How to Use Regex Reference

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See which patterns match.

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What is regex?

Regular expressions — pattern matching for text searching and validation.