trim()

trim() | trimStart() | trimEnd()

trim() : 앞뒤 문자열 공백제거 trimStart() : 앞 공백 제거 trimEnd() : 뒤 공백 제거

//01
const str1 = "   javascript    ";
const currentStr1 = str1.trim();

document.querySelector(".sample03_N1").innerHTML = "1";
document.querySelector(".sample03_Q1").innerHTML = "   javascript    ";
document.querySelector(".sample03_M1").innerHTML = "trim()";
document.querySelector(".sample03_P1").innerHTML = currentStr1; // "javascript"

//02
const str2 = "   javascript    ";
const currentStr2 = str2.trimStart();

document.querySelector(".sample03_N2").innerHTML = "2";
document.querySelector(".sample03_Q2").innerHTML = str2;
document.querySelector(".sample03_M2").innerHTML = "trimStart()";
document.querySelector(".sample03_P2").innerHTML = currentStr2; // "javascript    "

//03
const str3 = "   javascript    ";
const currentStr3 = str3.trimEnd();

document.querySelector(".sample03_N3").innerHTML = "3";
document.querySelector(".sample03_Q3").innerHTML = str3;
document.querySelector(".sample03_M3").innerHTML = "trimEnd()";
document.querySelector(".sample03_P3").innerHTML = currentStr3; //"     javascript"