공통 금액 함수

//input value가 금액일때, 호출
function inputNumberFormat(obj) {
    obj.value = comma(uncomma(obj.value));
}
function comma(str) {
    str = String(str);
    return str.replace(/(\d)(?=(?:\d{3})+(?!\d))/g, '$1,');
}
function uncomma(str) {
    str = String(str);
    return str.replace(/[^\d]+/g, '');
}