Introduction to Javascript quiz

What is JavaScript primarily used for?

• Styling web pages
• Defining the structure of a web page
• Adding interactivity to web pages
• Storing data on a server

How do you correctly include JavaScript code in an HTML file?

• <javascript>
• <js>
• <script>
• <style>

Which of the following is a "client-side" language that runs in the user's browser?

• PHP
• Python
• JavaScript
• SQL

What does the "DOM" stand for in web development?

• Document Object Model
• Data Object Model
• Document Oriented Markup
• Digital Object Mode

Which method is used to select the first element that matches a CSS selector?

• getElementByTag()
• selectElement()
• querySelector()
• getElement()

What is the purpose of an "event listener"?

• To style an HTML element
• To wait for a user action, like a click
• To store a variable
• To define the page structure

Which property is used to change the text content of an HTML element?

• innerHTML
• textContent
• textValue
• content

How do you declare a variable in modern JavaScript?

• variable myName;
• v myName;
• var myName;
• let myName;

Which operator is used for strict equality (checks value and type)?

• "=="
• "="
• "==="
• !=

What is a "function" in JavaScript?

• A data type for storing text
• A way to style elements
• A reusable block of code
• A type of variable