Task List [Part 2] - Delete & Filter Tasks

The video tutorial covers task management in a web application using JavaScript. It explains how to add and remove tasks dynamically, implement task removal with event delegation, clear all tasks using different methods, and filter tasks using a search input. The tutorial emphasizes DOM manipulation and performance considerations, providing practical examples and code snippets.

Why is event delegation necessary when adding event listeners to dynamically created elements?

• It allows for more complex event handling.

• It reduces the number of event listeners needed.

• It ensures that events are captured at the document level.

• It simplifies the code structure.

What is the purpose of the 'remove task' function in the task management application?

• To duplicate tasks in the list.

• To edit existing tasks.

• To remove tasks by targeting the correct parent element.

• To add new tasks to the list.

What does the confirmation step do before removing a task?

• It automatically removes the task.

• It saves the task to local storage.

• It asks the user for confirmation before removing the task.

• It logs the task details to the console.

What happens when you click the 'clear tasks' button?

• All tasks are duplicated.

• All tasks are removed from the list.

• The first task is highlighted.

• The last task is edited.

Which method is generally faster for clearing tasks from the list?

• Using innerHTML to set the list to empty.

• Using a for loop to iterate through tasks.

• Using a map function to clear tasks.

• Using removeChild in a while loop.

What is the main advantage of using querySelectorAll over getElementsByClassName?

• querySelectorAll returns a live HTML collection.

• querySelectorAll is more compatible with older browsers.

• querySelectorAll can be used with a forEach loop directly.

• querySelectorAll is faster in all browsers.

How does the filter function work in the task management application?

• It hides tasks that do not match the search input.

• It duplicates tasks that match the search input.

• It sorts tasks alphabetically.

• It highlights tasks that match the search input.

What is the purpose of converting text to lowercase in the filter function?

• To ensure case-insensitive matching.

• To improve performance.

• To reduce the size of the text.

• To comply with HTML standards.

What is the role of the 'key up' event in the filter function?

• It triggers the filter function when a key is released.

• It prevents default browser actions.

• It triggers the filter function when a key is pressed.

• It logs the key pressed to the console.

What is the next step after completing the UI functionality in the task management application?

• Adding more tasks.

• Persisting tasks to local storage.

• Creating a new UI design.

• Removing the filter function.