Leetcode - 500. Keyboard Row

/**
 * @param {string[]} words
 * @return {string[]}
 */
var findWords = function (words) {
  const firstRow = 'qwertyuiop';
  const secondRow = 'asdfghjkl';
  const thirdRow = 'zxcvbnm';

  const result = [];

  for (const word of words) {
    const lowerCaseWord = word.toLocaleLowerCase();
    const a = lowerCaseWord.split('').every((word) => firstRow.includes(word));
    const b = lowerCaseWord.split('').every((word) => secondRow.includes(word));
    const c = lowerCaseWord.split('').every((word) => thirdRow.includes(word));

    if (a || b || c) {
      result.push(word);
    }
  }

  return result;
};

Runtime: 58 ms, faster than 98.18% of JavaScript online submissions for Keyboard Row.

Memory Usage: 42.1 MB, less than 29.55% of JavaScript online submissions for Keyboard Row.