Frontend Web Development Bootcamp - Build a Twitter Clone - Select and manipulate the elements - Part 2

This video tutorial covers DOM methods for selecting HTML elements, focusing on querySelector and querySelectorAll. It explains how querySelector returns the first matching element and querySelectorAll returns all matching elements as a NodeList. The tutorial also discusses the differences between NodeLists and arrays, and provides practical examples of using these methods to select elements by ID, class, and tag name. The video concludes with a brief mention of other less common DOM methods and encourages further learning through a JavaScript bootcamp.

What is the primary function of the getElementById method?

• To manipulate the inner HTML of an element

• To change the style of an element

• To select an element by its ID

• To select all elements with a specific class name

What does the querySelector method return?

• A null value if no elements match

• An array of elements

• The first element that matches a specified CSS selector

• All elements that match a specified CSS selector

How can you select an element with a specific ID using querySelector?

• By using a period (.) before the ID

• By using a hash (#) before the ID

• By using the element's class name

• By using the element's tag name

What is a NodeList?

• An array-like object with a length property

• A method to manipulate DOM elements

• An array of elements

• A single DOM element

What happens if you try to use an array method like push on a NodeList?

• It will convert the NodeList into an array

• It will add an item to the NodeList

• It will remove an item from the NodeList

• It will throw an error

Which method would you use to select multiple elements with the same class name?

• querySelector

• getElementsByClassName

• querySelectorAll

• getElementById

Which DOM methods are considered the most popular for selecting elements?

• getElementById, getElementsByTagName, and querySelector

• getElementById, querySelector, and querySelectorAll

• getElementsByClassName, querySelector, and querySelectorAll

• querySelector, querySelectorAll, and getElementsByName