replace() / replaceAll()

10. 문자열 메서드 : 변경 : replace() / replaceAll() : 문자열 변경

replace()는 문자열을 부분 문자열로 구분하고 배열로 반환해줍니다.

"문자열".replace(찾을 문자열, 변경할 문자열)
"문자열".replace(정규식)
"문자열".replace(정규식, 변경할 문자열)

const str1 = "javascript reference";
const currentStr1 = str1.replace("javascript", "자바스크립트");       //자바스크립트 reference
const currentStr2 = str1.replace("j", "J");                         //자바스크립트 reference
const currentStr3 = str1.replace("e", "E");                         //javascript rEference
const currentStr4 = str1.replaceAll("e", "E");                      //javascript rEfErEncE
const currentStr5 = str1.replaceAll(/e/g, "E");                      //javascript rEfErEncE
const currentStr6 = str1.replaceAll(/e/gi, "E");                      //javascript rEfErEncE


const str2 = "https://www.naver.com/img01.jpg";

const currentStr7 = str2.replace("img01", "img02");                   //https://www.naver.com/img02.jpg

const str3 = "010-2000-1000";

const currentStr8 = str3.replace("-","");                             //0102000-1000
const currentStr9 = str3.replaceAll("-","");                          //01020001000
const currentStr10 = str3.replace(/-/g,"");                           //01020001000
const currentStr11 = str3.replace(/-/g," ");                          //010 2000 1000
const currentStr12 = str3.replace(/-/g,"★");                         //010★2000★1000
const currentStr13 = str3.replaceAll(/[1-9]/g,"★");                  //0★0-★000-★000