[JS] 전화번호 변환 정규식

  function phoneFomatter(num,type){
    let formatNum = '';
    if(num.length==11){
        if(type==0){
            formatNum = num.replace(/(\d{3})(\d{4})(\d{4})/, '$1-****-$3');
        }else{
            formatNum = num.replace(/(\d{3})(\d{4})(\d{4})/, '$1-$2-$3');
        }
    }else if(num.length==8){
        formatNum = num.replace(/(\d{4})(\d{4})/, '$1-$2');
    }else{
        if(num.indexOf('02')==0){
            if(type==0){
                formatNum = num.replace(/(\d{2})(\d{4})(\d{4})/, '$1-****-$3');
            }else{
                formatNum = num.replace(/(\d{2})(\d{4})(\d{4})/, '$1-$2-$3');
            }
        }else{
            if(type==0){
                formatNum = num.replace(/(\d{3})(\d{3})(\d{4})/, '$1-***-$3');
            }else{
                formatNum = num.replace(/(\d{3})(\d{3})(\d{4})/, '$1-$2-$3');
            }
        }
    }
    return formatNum;
}