window.onload = function(){
  //todo: app code goes here
  //display todo items by passing in the refreshTodos function as a parameter?
  todoDB.open(refreshTodos);

  //get references to html elements
  var newTodoForm = document.getElementById('new-todo-form');
  var newTodoInput = document.getElementById('new-todo');
  var submitBtn = document.querySelector('.submitBtn');
  //my form submitter addEventListener
  newTodoForm.addEventListener('submit', triggerForm);

  submitBtn.addEventListener('click', triggerForm);

  //handle the form sumissions
function triggerForm() {
    //get text
    var text = newTodoInput.value;

    //check tomake sure test is not blank or just spaces
    if(text.replace(/ /g,'') != ''){
      //create the todo item
      todoDB.createTodo(text, function(todo) {
        refreshTodos();
      });
    }

    //reset input field
    newTodoInput.value = '';

    //don't send the form
    return false;
  };//end triggerForm function

  //update the list of todo items.
  function refreshTodos(){
    todoDB.fetchTodos(function(todos){
      var todoList = document.getElementById('todo-items');
      todoList.innerHTML = '';

      for(var i = 0; i < todos.length; i++){
        //read the todo items backwards-most recent first
        var todo = todos[(todos.length - 1 - i)];

        var li = document.createElement('li');
        li.id = 'todo-' + todo.timestamp;
        //li.setAttribute('draggable', 'true');
        var checkbox = document.createElement('button');
        checkbox.textContent = 'X';
        checkbox.className = 'todo-checkbox';//""
        checkbox.setAttribute('data-id', todo.timestamp);//""



        var span = document.createElement('span');
        span.innerHTML = todo.text;

        li.appendChild(span);
        li.appendChild(checkbox);
        todoList.appendChild(li);

        //set up listener checkbox
        checkbox.addEventListener('click', function(e){
          var id = parseInt(e.target.getAttribute('data-id'));

          todoDB.deleteTodo(id, refreshTodos);
        });
      }//end for i < todos.length
//my non mobile dragger function used to be here.

    });//end todoDB.fetchTodos
    newTodoInput.focus();

  }//end function refreshTodos
//begin slippery functions
//slideThem = <ul id="todo-items">
var slideThem = document.querySelector('#todo-items');
new Slip(slideThem);//apply slip library to <ul>
slideThem.addEventListener('slip:reorder', function(e){
  e.target.parentNode.insertBefore(e.target, e.detail.insertBefore);
});
//end slipper function
};//end window.onload