HTML CSS and JavaScript for Beginners - A Web Design Course - JavaScript DOM Selection

The video tutorial explains the Document Object Model (DOM) and how to select HTML elements using JavaScript. It covers various methods such as getElementById, getElementsByTagName, getElementsByClassName, querySelector, and querySelectorAll. The tutorial highlights the differences between node lists and arrays, and provides practical exercises for applying styles to selected elements.

What is the primary purpose of the Document Object Model (DOM) in web development?

• To style HTML elements

• To represent HTML elements as objects

• To manage server-side scripts

• To store user data

Which method is used to select an element by its ID in JavaScript?

• querySelector

• getElementsByTagName

• getElementByClassName

• getElementById

What is the difference between a NodeList and an array in JavaScript?

• NodeList is an object, not an array

• NodeList can only hold strings

• NodeList is faster than an array

• NodeList is a type of array

How can you select multiple elements with the same class name in JavaScript?

• Using querySelector

• Using getElementById

• Using getElementsByClassName

• Using getElementsByTagName

What is the advantage of using querySelector in JavaScript?

• It can only select elements by class name

• It is faster than other selection methods

• It can only select elements by ID

• It allows selection using CSS-style selectors

Which method would you use to select all elements that match a CSS selector?

• querySelector

• getElementById

• getElementsByClassName

• querySelectorAll

What is the recommended way to select multiple elements when expecting more than one result?

• Using getElementById

• Using querySelector

• Using querySelectorAll

• Using getElementsByTagName