I'm not seeing the console logs when I click on the checkboxes and buttons...where did I go wrong?

//Problem: User interaction doesn't provide desired results.
//Solution: Add interactivity so the user can manage daily tasks.

var taskInput = document.getElementById("new-task"); //new-task
var addButton = document.getElementsByTagName("button")[0]; //first button
var incompleteTasksHolder = document.getElementById("incomplete-tasks"); //incomplete-tasks
var completedTasksHolder = document.getElementById("completed-tasks"); //completed-tasks

//Add a new task
var addTask = function() {
  console.log("Add task...");
  //When the button is pressed
  //Create a new list item with the text from #new-task:
    //Input (checkbox)
    //Label
    //Input (text)
    //button.edit
    //button.delete
    //Each element needs to be modified and appended
}

//Edit an existing task
var editTask = function() {
  console.log("Edit task...");
  //When the edit button is pressed
    //if the class of the parent is .editMode
    //Switch from .editMode
    //label text become the input's value
  //else
    //Switch to .editMode
    //input value becomes the label's text

  //Toggle .editMode on the parent
}

//Delete an existing task
var deleteTask = function() {
  console.log("Delete task...");
  //when the Delete button is pressed
    //Remove the parent list item from the ul
}

//Mark a task as complete
var taskCompleted = function() {
  console.log("Task Complete...");
  //When the Checkbox is checked
    //Append the task list item to the #completed-tasks
}

//Mark a task as incomplete
var taskIncomplete = function() {
  console.log("Task Incomplete...");
  //When the checkbox is unchecked
    //Append the task list item to the #complete-tasks
}

var bindTaskEvents = function(taskListItem, checkBoxEventHandler) {
  console.log("Bind list item events");
  //select taskListItem's children
  var checkBox = taskListItem.querySelector("input[type=checkbox]");
  var editButton = taskListItem.querySelector("button.edit");
  var deleteButton = taskListItem.querySelector("button.delete");

    //bind editTask to edit button
    editButton.onclick = editTask;

    //bind deleteTask to delete button
    deleteButton.onclick = deleteTask;

    //bind checkBoxEventHandler to checkbox
    checkBox.onchange = checkBoxEventHandler;
}

//Set the click handler to the addTask function
addButton.onclick = addTask;

//cycle over incompleteTasksHolder ul list items
for (var i = 0; i < incompleteTasksHolder.children.length; i++) {
  //bind events to list item's children (taskCompleted)
  bindTaskEvents(incompleteTasksHolder.children[i], taskCompleted);
}

//cycle over completedTasksHolder ul list items
for (var i = 0; i < completedTasksHolder.children.length; i++) {
    //bind events to list item's children (taskIncomplete)
  bindTaskEvents(completedTasksHolder.children[i], taskIncomplete);
}