Modern Web Design with HTML5, CSS3, and JavaScript - Selecting Web Page Elements using JavaScript Element Selectors

The video tutorial covers various methods of selecting HTML elements using JavaScript. It begins with an introduction to the document object and its methods for selecting elements by ID, tag name, and class name. The tutorial explains how selecting by ID returns a single element, while selecting by tag name or class name returns a node list. It also introduces the querySelector and querySelectorAll methods, which offer a more flexible approach to element selection. The tutorial emphasizes the importance of understanding object references and how changes to elements are reflected across different selections.

Describe how the length property of a node list can be useful when working with selected elements.

How can you update the text content of an element using JavaScript, and what is the difference between innerHTML and textContent?

What is the significance of using the hash (#) and dot (.) when selecting elements by ID and class respectively?