Question

How to validate a 10-digit phone number with hyphens (e.g. 333-555-1234) using RegEx in TypeScript

Answer 1

const phoneNumber: string = "777-555-1234";
const pattern: RegExp = /^\d{3}-\d{3}-\d{4}$/;

if (pattern.test(phoneNumber)) {
    console.log("Valid phone number format");
} else {
    console.log("Invalid phone number format");
}



/*
run:

"Valid phone number format" 

*/

 

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