JS: String.prototype.padEnd

(new in ECMAScript 2017)

str.padEnd(n)

Return a new string, by adding space to the end of string so the length is n.

console.log("x".padEnd(3) === "x  ");

str.padEnd(n, padstr)

Use padStr to pad.

console.log("x".padEnd(3, "0") === "x00");
console.log("x".padEnd(4, "ab") === "xaba");
// true

🛑 warning: if string contains emoji (🦋) or rarely used unicode character, result of string methods may not be what you expect. See JS: String Index and Code Unit