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Regex Tester (JavaScript Only)

test JavaScript regex patterns with live highlighting, captures, and explanations

Live output enabled
Ready

Regex Engine

JavaScript (ECMAScript) Only

Browser-only execution currently supports JavaScript regex behavior.

Highlighted Matches

Regex Status

Pattern compiled successfully. Matches and explanations update automatically as you type.

Raw Output

Example output:
Engine: JavaScript (ECMAScript)
Pattern: /order-(\d+)/g
Matches: 2

Explanation

Pattern Tokens

  • No token explanations yet.

Flags

  • No flag explanations yet.

Match Information

0 matches

No matches yet. Update the pattern or input text.

About Regex Tester (JavaScript Only)

Regex Tester (JavaScript Only) helps you test javascript regex patterns with live highlighting, captures, and explanations directly in your browser with no backend dependency.

Use Cases

  • Run Regex Tester (JavaScript Only) while debugging API responses and config snippets.
  • Share normalized output from Regex Tester (JavaScript Only) with teammates quickly.
  • Use Regex Tester (JavaScript Only) as part of a repeatable local text-processing workflow.

Examples

Sample Regex Tester (JavaScript Only) transformation output.

Input

order-123
order-456
invoice-99

Output

Engine: JavaScript (ECMAScript)
Pattern: /order-(\d+)/g
Matches: 2

Idempotent rerun example for Regex Tester (JavaScript Only) when applicable.

Input

Engine: JavaScript (ECMAScript)
Pattern: /order-(\d+)/g
Matches: 2

Output

Engine: JavaScript (ECMAScript)
Pattern: /order-(\d+)/g
Matches: 2

FAQ

Does Regex Tester (JavaScript Only) send my data to a server?

No. Execution happens in your browser tab.

Can I share a direct URL for Regex Tester (JavaScript Only)?

Yes. Every tool has its own indexable route under /tools/<slug>.