Ridiculously Simple Balanced Parentheses Algorithm

balanced.js

function isBalancedSimple (before) {
  if (before === '') return true;
  
  const after = before.replace('()','');
  
  return (before !== after) && isBalancedSimple(after);
}

function isBalancedMultiple (before) {
  if (before === '') return true;
  
  const after = before.replace('()','').replace('[]','').replace('{}','');
  
  return (before !== after) && isBalancedMultiple(after);
}