Question

How to validate a 10-digit standard 10 digit phone number using RegEx in TypeScript

Answer 1

const phoneNumbers: string[] = [
    "333-555-1234",
    "(333)-555-1234",
    "333 555 1234",
    "333.555.1234",
    "+91 (333) 555-1234"
];

const pattern: RegExp = /^(\+\d{1,2}\s)?\(?\d{3}\)?[\s.-]?\d{3}[\s.-]?\d{4}$/;

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



/*
run:

"Valid phone number format" 
"Valid phone number format" 
"Valid phone number format" 
"Valid phone number format" 
"Valid phone number format" 
"Valid phone number format" 
"Valid phone number format" 

*/

 

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