[JavaScript] 문자열

반복되는 문자열 생성

const BLANK = "_";
const result = BLANK.repeat(number);

 

문자열 합치기

1. +연산

const a = "_";
const b = "+";
const c = "-";
const result = a + b + c;

 

2. list to string (join)

const a = "_";
const b = "+";
const c = "-";
const result = [];
result.push(a,b,c);
result.join("");

 

성능 비교

(1) 59175 ms vs (2) 220 ms

https://stackoverflow.com/questions/2087522/does-javascript-have-a-built-in-stringbuilder-class