ℹ️ Regex Tester runs entirely client-side using JavaScript's native RegExp. No server API is needed. Here's how to use the same logic in your own code:
Test a regex pattern against a string in JavaScript.
// Client-side regex testing — no API call neededconst pattern = "[a-z]+@[a-z]+\\.[a-z]+";
const flags = "gi";
const testString = "Contact us at hello@example.com or info@test.org";
const regex = newRegExp(pattern, flags);
const matches = [...testString.matchAll(regex)];
matches.forEach((m, i) => {
console.log(`Match ${i+1}: ${m[0]} (index: ${m.index})`);
});
// → Match 1: hello@example.com (index: 14)
// → Match 2: info@test.org (index: 36)