Modern Web Design with HTML5, CSS3, and JavaScript - Updating the Element Attributes Using JavaScript DOM

The video tutorial covers how to create and manipulate list items in HTML using JavaScript. It explains how to select list items, retrieve and set their attributes, and handle class manipulations. The tutorial demonstrates using loops to iterate through elements, applying conditions to update classes, and ensuring the integrity of existing attributes. The video concludes with a preview of further attribute manipulation techniques.

What is the first step in working with list items in the document?

• Add new attributes to list items

• Log out the entire document

• Select list items using document queries

• Create a new HTML document

Which attribute is specifically checked for in the list items?

• Style

• ID

• Name

• Class

What method is used to add a new ID attribute to list items?

• updateAttribute

• setAttribute

• getAttribute

• removeAttribute

What happens to the class attribute when a new class is set?

• The new class is added alongside existing classes

• The existing class is removed and replaced

• The new class is ignored

• The document throws an error

How can you ensure that existing class values are preserved when adding new ones?

• By using a different method than setAttribute

• By removing all existing classes first

• By directly setting the new class

• By using a temporary variable to check existing values

What condition is checked before adding a new class of 'listy'?

• If the element is visible

• If the element is a list item

• If the element has an ID

• If the element has no existing class

What is the result of the conditional logic applied to list items?

• List items are duplicated

• All list items are removed

• Only list items with no class get a new class

• All list items have the same class