text: var nameVar = 'John';
  var nameVar = 'Mike';
  console.log('nameVar', nameVar);
  
  let nameLet = 'Jen';
  // error cannot redefine
  //let nameLet = 'Mike';
  nameLet = 'Julie'
  console.log('nameLet', nameLet)
  
  
  const nameConst = 'Frank';
  console.log('nameConst', nameConst)
  
  function getPetName() {
    var petName = 'Hal';
    return petName;
  }
  