Javascript Regex French Number

function regexPhoneNumber(str) {
	const regexPhoneNumber = /^((\+)33|0)[1-9](\d{2}){4}$/; 
  
	if (str.match(regexPhoneNumber)) {
		return true;
	} else {
		return false;
	}
}

let phoneNumber = "+33777777777";
console.log(regexPhoneNumber(phoneNumber));
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