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Front End Web Development Techdegree Student 4,945 PointsI cant get my bindTasksEvents to print to the console
Hello!
I am following the video lectures, when I run this code below, the bindTasksEvents() is supposed to print to the console, the following: Bins List items events And when I click on Paybills, I am supposed to see printed in the console: Task complete
BUT instead, I get this message in the console
Uncaught TypeError: Cannot set property 'onclick' of undefined try.html:63 bindTaskEvents (); Bind list item events try.html:46 Uncaught TypeError: Cannot read property 'querySelector' of undefined
How can I make my bindTasksEvents to work?
<!DOCTYPE html>
<html>
<head>
<title>Todo App</title>
<link href='http://fonts.googleapis.com/css?family=Lato:300,400,700' rel='stylesheet' type='text/css'>
<link rel="stylesheet" href="css/style.css" type="text/css" media="screen" charset="utf-8">
<script>
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...");
//Create a new list item with the text from #new-task:
}
//Edit an existing task
var editTask = function() {
console.log("Edit task...");
}
//Delete an existing task
var deleteTask = function() {
console.log("Delete task...");
}
//Mark a task as complete
var taskCompleted = function() {
console.log("Task complete...");
}
//Mark a task as incomplete
var taskIncomplete = function() {
console.log("Task incomplete...");
}
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");
editButton.onclick = editTask;
deleteButton.onclick = deleteTask;
checkBox.onchange = checkBoxEventHandler;
}
addButton.onclick=addTask;
for(var i = 0; i < incompleteTasksHolder.children.length; i++) {
bindTaskEvents(incompleteTasksHolder.children[i], taskCompleted);
}
for(var i = 0; i < completedTasksHolder.children.length; i++) {
bindTaskEvents(completedTasksHolder.children[i], taskIncomplete);
}
</script>
</head>
<body>
<div class="container">
<p>
<label for="new-task">Add Item</label><input id="new-task" type="text"><button>Add</button>
</p>
<h3>Todo</h3>
<ul id="incomplete-tasks">
<li><input type="checkbox"><label>Pay Bills</label><input type="text"><button class="edit">Edit</button><button class="delete">Delete</button></li>
<li class="editMode"><input type="checkbox"><label>Go Shopping</label><input type="text" value="Go Shopping"><button class="edit">Edit</button><button class="delete">Delete</button></li>
</ul>
<h3>Completed</h3>
<ul id="completed-tasks">
<li><input type="checkbox" checked><label>See the Doctor</label><input type="text"><button class="edit">Edit</button><button class="delete">Delete</button></li>
</ul>
</div>
<script type="text/javascript" src="js/app.js"></script>
</body>
</html>
1 Answer
Ken Alger
Treehouse TeacherOrange;
Are you adding your JavaScript directly in your HTML as posted or in a separate linked file as in the video project and in the <script>
tag you have at the bottom of your HTML post?
Ken
orange sky
Front End Web Development Techdegree Student 4,945 Pointsorange sky
Front End Web Development Techdegree Student 4,945 PointsHello Ken,
I was actually going to take this post down; I just found my mistake. I should let the page load first and then place the script at the bottom.
So all is well now!
thanks!