Method to clear nodes inside a html element with specific id

clearView.js

// Clear all the nodes inside the element with id 'main-area'
function clearView() {
  var mainArea = document.getElementById('main-area');
  var firstChild = mainArea.firstChild;
  while (firstChild) {
    mainArea.removeChild(firstChild);
    firstChild = mainArea.firstChild;
  }
}