Lesson 1: Introduction to JavaScript

Question 1

What can’t JavaScript do?

Answer 1

Directly access files on the server or client machine.

Question 2

JavaScript is use to..?

Answer 2

Add features and enhance user experience.

Question 3

What are some uses of JavaScript on a webpage?

Answer 3

• Handling user interactions
• Producing complex animations and web games
• Supporting server-side functions

Question 4

What are two commonly used web design strategies?

Answer 4

Graceful Degradation and Progressive Enhancement.

Question 5

What is Graceful Degradation?

Answer 5

Building a website that works best in modern browsers.

Question 6

What is Progressive Enhancement?

Answer 6

Building a website from the ground up with base level functionality.

Question 7

Each object has certain properties and methods. How do you access them using the Dot Notation?

Answer 7

window. document.write(“Welcome to the page!”);

window. alert(“Hello there!”);

Question 8

Write an HTML or a text string in place:

Answer 8

document.write(“string”) - String may include HTML tags.

Question 9

Show a pop up message:

Answer 9

alert(“text message”);

Question 10

Prompt for user input:

Answer 10

let input = prompt (“message”);

Question 11

Where does JavaScript get put on a webpage?

Answer 11

At the end above the body tag.

Question 12

Write a JavaScript link:

Question 13

What is a Document Object Model (DOM)?

Answer 13

A way of visualizing a document and its contents.