Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

JavaScript Interactive Web Pages with JavaScript Traversing and Manipulating the DOM with JavaScript Perform: Modifying Elements

Doesn't delete item when manually added

When I manually add new item through add button and then check a checkbox - my new item doesn't delete itself from to do list. Please help - thanks!

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

var taskInput = document.getElementById("new-task"); //new-task
var addButton = document.getElementsByTagName("button")[0]; //First button
var incompleteTaskHolder = document.getElementById("incomplete-tasks"); //incomplete-tasks
var completedTaskHolder = document.getElementById("completed-tasks"); //completed-tasks

//New Task List Item
var createNewTaskElement = function(taskString) {
    //Create List Item
    var listItem = document.createElement("li");

    //input (checkbox)
    var checkBox = document.createElement("input"); //Checkbox
    //label
    var label = document.createElement("label");
    //input text
    var editInput = document.createElement("input"); //text
    //button.edit
    var editButton = document.createElement("button");
    //button.delete
    var deleteButton = document.createElement("button");

    //Each element needs modifying
    checkBox.type = "checkBox";
    editInput.type = "text";

    editButton.innerText = "Edit";
    editButton.className = "Edit";
    deleteButton.innerText = "Delete";
    deleteButton.className = "Delete";

    label.textContent = taskString;

    //Each element needs appending
    listItem.appendChild(checkBox);
    listItem.appendChild(label);
    listItem.appendChild(editInput);
    listItem.appendChild(editButton);
    listItem.appendChild(deleteButton);

    return listItem;
};

//Add a new task
var addTask = function() {
  //When the button is pressed

  //Create a new list item with the text from #new-task:
  var listItem = createNewTaskElement(taskInput.value);

  //Append listItem to incompleteTaskHolder
  incompleteTaskHolder.appendChild(listItem);
};

//Edit an existing task
var editTask = function() {
  //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

    //Toglle .editMode on the parent
};

//Delete an exisitng task
var deleteTask = function() {
  var listItem = this.parentNode;
  var ul = listItem.parentNode;

  //Remove the parent list item from the ul
  ul.removeChild(listItem);
};

//Mark a task as complete
var taskCompleted = function() {
  //Append the task list item to the #completed-task
  var listItem = this.parentNode;
  completedTaskHolder.appendChild(listItem);
  bindTaskEvents(listItem, taskIncomplete);
};

//Mark a tast as incomplete
var taskIncomplete = function() {
  //Append the task list item to the #incomplete-task
  var listItem = this.parentNode;
  incompleteTaskHolder.appendChild(listItem);
  bindTaskEvents(listItem, taskCompleted);
};

var bindTaskEvents = function(taskListItem, checkBoxEventHandler){
//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 dellete button
  deleteButton.onclick = deleteTask;

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

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

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

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

2 Answers

First thing I notice is there isn't a call to the bindTaskEvents in the addTask function.

var addTask = function() {
     var listItem = createNewTaskElement(taskInput.value);
    incompleteTaskHolder.appendChild(listItem);
    bindTaskEvents(listItem, taskCompleted); //Add this line.. which will bind the click handlers...
    taskInput.value = ""; //And this line ..which will clear the input field ...to your addTask function and try it again.
};

Still doesn't work :/

great

I ran into the same problem. The issue is in this bit of code:

editButton.innerText = "Edit";

editButton.className = "Edit";

deleteButton.innerText = "Delete";

deleteButton.className = "Delete";

the .className's are case sensitive. The following will solve your problem.

editButton.innerText = "Edit";

editButton.className = "edit";

deleteButton.innerText = "Delete";

deleteButton.className = "delete";