Headwing

내가 푼 정답 function solution(new_id) { // 1단계 new_id = new_id.toLowerCase(); // 2단계 let new_id_temp = new_id; var pattern1 = /[0-9]/; //숫자 var pattern2 = /[a-z]/; //영어 for (i = 0; i < new_id_temp.length; i++) { if ( pattern1.test(new_id_temp[i]) | pattern2.test(new_id_temp[i]) | (new_id_temp[i] === "-") | (new_id_temp[i] === "_") | (new_id_temp[i] === ".") ) { } else { new_id = new_id.replace(new_i..