split()

split()

문자열에서 원하는 값을 추출해 배열로 반환해 줍니다.

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split()

문자 객체를 지정한 구분자를 이용하여 여러개의 문자열로 나눕니다.

"문자열".split(구분자);
"문자열".split(정규식 표현);
"문자열".split(구분자, 갯수);

const str1 = "javascript reference";
const currentStr1 = str1.split('');     //['j', 'a', 'v', 'a', 's', 'c', 'r', 'i', 'p', 't', ' ', 'r', 'e', 'f', 'e', 'r', 'e', 'n', 'c', 'e']
const currentStr2 = str1.split(' ');    //['javascript', 'reference'], 한칸 띄웠음
const currentStr3 = str1.split('', 1);  //['j']
const currentStr4 = str1.split('', 2);  //['j', 'a']
const currentStr5 = str1.split(' ', 1);  //['javascript']
const currentStr6 = str1.split(' ', 2);  //['javascript', 'reference']
const currentStr7 = str1.split('j');     //['', 'avascript reference']
const currentStr8 = str1.split('a');     //['j', 'v', 'script reference']
const currentStr9 = str1.split('e');     //['javascript r', 'f', 'r', 'nc', '']
    
const str2 = "java/script/refer/ence";
const currentStr10 = str2.split('/');   //['java', 'script', 'refer', 'ence']
    
const str3 = "java&script&refer!ence";
const currentStr11 = str3.split('!');  //['java&script&refer', 'ence']
const currentStr12 = str3.split('&');  //['java', 'script', 'refer!ence']
const currentStr13 = str3.split(/&|\!/);  //['java', 'script', 'refer', 'ence']
    
const str4 = "javascript reference";
const currentStr14 = str4.split('').join();  //j,a,v,a,s,c,r,i,p,t, ,r,e,f,e,r,e,n,c,e (문자열)
const currentStr15 = str4.split('').join('*');  //j*a*v*a*s*c*r*i*p*t* *r*e*f*e*r*e*n*c*e
const currentStr16 = str4.split('').reverse().join();   //e,c,n,e,r,e,f,e,r, ,t,p,i,r,c,s,a,v,a,j (반대로)
const currentStr17 = str4.split('').reverse().join('/');  //e/c/n/e/r/e/f/e/r/ /t/p/i/r/c/s/a/v/a/j