Extracting logic from a complex function

extracting-function-logic.js

function startProgram() {
  if (!window.indexedDB) {
    throw new Error("Browser doesn't support indexedDB");
  }

  initDatabase();
  setListeners();
  printEmployeeList();
}

function initDatabase() {
  let openRequest = indexedDB.open('store', 1);

  openRequest.onerror = () => {
    console.error('Error', openRequest.error);
  };
  openRequest.onsuccess = () => {
    let db = openRequest.result;
  };
}

function setListeners() {
  document.getElementById('stat-op').addEventListener('click', () => {});
  document.getElementById('pre2456').addEventListener('click', () => {});
  document.getElementById('cpTagList100').addEventListener('change', () => {});
  document.getElementById('cpTagList101').addEventListener('click', () => {});
  document.getElementById('gototop').addEventListener('click', () => {});
  document.getElementById('asp10').addEventListener('click', () => {});
}

async function printEmployeeList() {
  const employees = await getEmployeeList();

  document.getElementById('employeeSelect').innerHTML = formatEmployeeList(employees);
}

function formatEmployeeList(employees) {
  return employees.reduce(
    (content, employee) => content + employee.name + '<br>',
    ''
  );
}

function getEmployeeList() {
  return fetch('employeeList.json').then(res => res.json());
}