string.padEnd

str.padEnd(targetLength [, padString])

'abc'.padEnd(10);          // "abc?????? "
'abc'.padEnd(10, "foo");   // "abcfoofoof"
'abc'.padEnd(6, "123456"); // "abc123"
'abc'.padEnd(1);           // "abc"

// https://github.com/uxitten/polyfill/blob/master/string.polyfill.js
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/repeat
if (!String.prototype.padEnd) {
? ? String.prototype.padEnd = function padEnd(targetLength,padString) {
? ? ? ? targetLength = targetLength>>0; //floor if number or convert non-number to 0;
? ? ? ? padString = String(padString || ' ');
? ? ? ? if (this.length > targetLength) {
? ? ? ? ? ? return String(this);
? ? ? ? }
? ? ? ? else {
? ? ? ? ? ? targetLength = targetLength-this.length;
? ? ? ? ? ? if (targetLength > padString.length) {
? ? ? ? ? ? ? ? padString += padString.repeat(targetLength/padString.length); //append to original to ensure we are longer than needed
? ? ? ? ? ? }
? ? ? ? ? ? return String(this) + padString.slice(0,targetLength);
? ? ? ? }
? ? };
}