STRING TRIMMING METHODS

ECMAScript 2019 added two methods to the String prototype, trimStart() and trimEnd(), which allow for targeted whitespace removal. These methods are intended to replace trimLeft() and trimRight() which have ambiguous meaning in the context of right-to-left languages such as Arabic and Hebrew.

These two methods are effectively the opposite of padStart() and padEnd() with a single space character. The following example adds whitespace to a string and then removes it on either side:

let s = '  foo  ';

console.log(s.trimStart()); // "foo  "
console.log(s.trimEnd());  // "  foo"