The Art of Doing - Web Development for Beginners - Using querySelector()

This video tutorial introduces the query selector method in JavaScript, demonstrating how it can be used to access HTML elements. The tutorial covers setting up HTML and JavaScript files, using query selector for element selection, and advanced techniques like using pseudo-classes and descendant selectors. The video concludes with a summary of the benefits of using query selector over getElementById.

What is the main focus of the video tutorial?

• Using getElementById

• Understanding query selector

• Styling HTML with CSS

• Creating JavaScript functions

Which method allows more complex selection options similar to CSS?

• getElementById

• querySelector

• getElementsByTagName

• getElementsByClassName

How do you select an element by its ID using query selector?

• Using a hashtag before the ID

• Using the element name directly

• Using a period before the ID

• Using a colon before the ID

What is the purpose of using a descendant selector in query selector?

• To select elements by their class

• To select elements by their ID

• To select elements nested within another element

• To select all elements of a type

Which attribute is used to change the style of an element in JavaScript?

• className

• style

• setAttribute

• innerHTML

What does querySelectorAll return?

• A boolean value

• An array of elements

• A single element

• A string of HTML

How can you select all even paragraphs using querySelectorAll?

• Using nth-of-type(odd)

• Using nth-child(even)

• Using nth-of-type(even)

• Using nth-child(odd)

What is the main advantage of using querySelector over getElementById?

• It allows for more complex selections

• It is faster

• It is easier to use

• It is more widely supported

Which method would you use to select multiple elements that meet a certain criteria?

• querySelectorAll

• querySelector

• getElementsByTagName

• getElementById

What is the correct way to target a class in querySelector?

• Using a hashtag

• Using a period

• Using a colon

• Using a semicolon