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Match American Zip Code
Explicación
This regex pattern matches American zip codes. It starts with a word boundary \b, followed by 5 digits \d{5}. It then optionally matches a hyphen and 4 digits (?:-\d{4}) before ending with another word boundary \b.
Javascript
Ejemplo de Uso
const regex = /\b\d{5}(?:-\d{4})?\b/;
const zipCode = '12345';
console.log(regex.test(zipCode)); // Output: trueCopiarPrueba la expresión