핸드폰 번호 하이픈(-) 자동입력 > 정보공유

<script>
function applyPhoneNumberFormatting(elementId) {
	var inputField = document.getElementById(elementId);
	inputField.onkeyup = function(event) {
		event = event || window.event;
		var _val = this.value.trim();
		this.value = formatPhoneNumber(_val);
	}
}

function formatPhoneNumber(str) {
	str = str.replace(/[^\d]/g, "");
	const length = str.length;

	if (length < 4) return str;
	if (length < 7) return `${str.slice(0, 3)}-${str.slice(3)}`;
	if (length < 11) return `${str.slice(0, 3)}-${str.slice(3, 6)}-${str.slice(6)}`;

	return `${str.slice(0, 3)}-${str.slice(3, 7)}-${str.slice(7)}`;
}

$(function(){
	applyPhoneNumberFormatting('od_hp'); // input id가 od_hp
	applyPhoneNumberFormatting('od_b_hp'); // input id가 od_b_hp
});
</script>