ransome_note.js

/**
 * @param {string} ransomNote
 * @param {string} magazine
 * @return {boolean}
 */
const canConstruct = function (ransomNote, magazine) {
  const asciiPossible = 'abcdefghijklmnopqrstuvwxyz';

  if(ransomNote.length > magazine.length){
    return false
  }

  for (let i = 0; i < asciiPossible.length; i++) {
    let re = new RegExp(asciiPossible[i], "g");
    if (ransomNote.replace(re, '').length !== magazine.replace(re, '').length) {
      return false
    }
  }
  return true
};

console.log(canConstruct("a", "b"));
console.log(canConstruct("aa", "ab"));
console.log((canConstruct("aa", "aab"));