Modern JavaScript from the Beginning - Second Edition - Remove and Clear Items

The video tutorial explains how to use event delegation in JavaScript to target specific elements, such as X buttons, for removing list items. It covers setting up event listeners, implementing remove functionality, and using class lists and parent elements to navigate the DOM. Additionally, it demonstrates how to clear all items from a list efficiently.

What is the primary goal of using event delegation in this tutorial?

• To sort the list alphabetically

• To change the color of list items

• To target and delete specific elements

• To add new items to the list

In the removeitem function, what is the purpose of using e.target?

• To identify the element that was clicked

• To change the text of the element

• To create a new list item

• To add a new event listener

How does the contains method help in the removeitem function?

• It removes the class from the element

• It verifies if an element has a specific class

• It checks if the list is empty

• It adds a new class to the element

What is the role of the parentElement property in the removeitem function?

• To duplicate the parent element

• To change the style of the parent element

• To navigate to the parent of the clicked element

• To add a new child element

What is the purpose of the clear items function?

• To change the background color of the list

• To sort the list items

• To remove all list items efficiently

• To add new items to the list

Which method is used to remove all child elements from the list?

• appendChild

• replaceChild

• insertBefore

• removeChild

What is the advantage of using a while loop in the clear items function?

• It duplicates the list items

• It ensures all items are removed one by one

• It adds new items to the list

• It changes the order of the list items