Full Stack Web Development MASTERY Course - Novice to Expert - Children Parent and Traversing the DOM

This tutorial covers how to traverse the DOM using JavaScript, focusing on accessing HTML elements through various methods such as query selectors, and understanding the DOM hierarchy. It explains the differences between child nodes and children, and introduces node types and properties. The video also demonstrates how to navigate through DOM elements using parent, child, and sibling properties, providing practical examples to illustrate these concepts.

Which method is used to access the first element that matches a specified group of selectors?

• getElementsByClassName

• querySelector

• getElementById

• getElementsByTagName

In the DOM hierarchy, what is the relationship between the body tag and a div tag inside it?

• Parent

• Child

• Ancestor

• Sibling

Why is it not recommended to use child nodes for DOM manipulation?

• It is slower than other methods

• It counts blank text and comments

• It does not work with querySelector

• It only returns the first element

What does a node type value of 1 represent?

• Attribute

• Text Node

• Comment

• HTML Element

How can you retrieve a specific node using its index in JavaScript?

• Using node type

• Using node name

• Using querySelector

• Using getElementById

What is the purpose of the children property in DOM manipulation?

• To retrieve the parent node

• To find the next sibling

• To count all nodes including text and comments

• To access only element nodes

What does the firstElementChild property return?

• The first child node

• The first parent node

• The first element node

• The first sibling node

How can you find the parent node of a specific element?

• Using parentNode

• Using previousSibling

• Using childNodes

• Using nextSibling

What will the nextElementSibling property return?

• The next element node

• The next child node

• The next text node

• The next parent node

Which property would you use to count the number of child elements?

• childNodes

• children

• childElementCount

• nodeType