JavaScript Masterclass - Zero to Job-Ready with Hands-On Projects - Update Task Count / 226

This lecture focuses on dynamically updating a message in a web application. It begins by explaining the need to query select a span element and calculate the number of list items (Li) to update the message. A reusable function is created to handle updates whenever tasks are added, deleted, or cleared. The lecture concludes with a preview of the next topic, which involves updating search functionality using key up events.

What are the two main tasks involved in updating the message dynamically?

• Selecting the span element and calculating the number of list items

• Creating a new HTML element and styling it

• Writing a new JavaScript function and testing it

• Debugging the existing code and optimizing it

Why is a function created to update the message?

• To avoid writing repetitive code for updating the message

• To handle errors in the code

• To make the code more complex

• To ensure the message is updated only once

When should the update function be called?

• After adding, deleting, or clearing tasks

• Only when a task is deleted

• Only when a task is added

• Only when the page is loaded

How is the length of list items calculated?

• By counting the number of span elements

• By selecting all children of the UL element

• By using a fixed number

• By manually entering the number

What happens if the update function is not called after a change?

• The tasks will be deleted

• The message will not reflect the current number of tasks

• The page will reload automatically

• An error message will be displayed

What is the next topic to be covered after updating the message?

• Updating the search functionality

• Adding new features

• Debugging the code

• Styling the page

What event will be used to update the search functionality?

• Click event

• Mouseover event

• Key up event

• Load event