JavaScript Masterclass - Zero to Job-Ready with Hands-On Projects - Selectors

The video tutorial covers the concept of selectors in HTML, explaining their importance in applying styles to the correct elements. It discusses different types of selectors, including tag, class, ID, and universal selectors, and demonstrates their use through a sample HTML structure. The tutorial also introduces grouping selectors and combinators, explaining parent-child and sibling relationships, and advanced combinator techniques for precise element selection.

What is the primary purpose of using CSS selectors in HTML?

• To optimize server performance

• To create new HTML elements

• To add JavaScript functionality

• To select and style specific HTML elements

Which section of the webpage contains the navigation and logo?

• Header

• Main

• Footer

• Sidebar

How can you select all image tags on a webpage using CSS?

• By using the universal selector

• By using the ID selector

• By using the class selector

• By using the IMG tag selector

What does the universal selector (*) do in CSS?

• Selects elements with a specific class

• Selects only text elements

• Selects all elements on the page

• Selects elements with a specific ID

How can you apply the same style to both H1 and H2 tags using CSS?

• By using separate style rules for each

• By using a grouping selector with a comma

• By using the universal selector

• By using an ID selector

What is the purpose of a combinator in CSS?

• To select elements based on their relationship

• To optimize CSS performance

• To combine multiple styles into one

• To create new HTML elements

Which combinator would you use to select only the direct children of an element?

• Universal selector

• Child combinator

• Adjacent sibling combinator

• General sibling combinator

What does the adjacent sibling combinator (+) do?

• Selects the next sibling immediately following an element

• Selects the first child of an element

• Selects all siblings of an element

• Selects all children of an element

Why is it important to use efficient CSS selectors?

• To reduce the size of HTML files

• To improve server response time

• To ensure styles are applied correctly and efficiently

• To increase the number of CSS files

How can you select an element with both a specific class and ID?

• By using a class selector only

• By using an ID selector only

• By combining class and ID selectors

• By using the universal selector