HTML CSS and JavaScript for Beginners - A Web Design Course - JavaScript Try it, Exercise #1

The video tutorial guides learners to update a JavaScript code snippet to display 'Hello World' using variables. It begins by instructing viewers to apply previous lessons to fix an error where 'message' is not defined. The solution involves declaring a variable 'message' and assigning it the string 'Hello World'. The tutorial explains how this variable can be used to update the inner HTML of an H2 element. Viewers are encouraged to experiment with customizing the message. The video concludes with a preview of the next topic, which is the use of operators in JavaScript.

What is the main task introduced in the first section of the video?

• To learn about JavaScript operators

• To update a statement to display 'Hello World' using variables

• To debug a complex JavaScript application

• To create a new JavaScript function

What is the error message mentioned in the first section that needs to be addressed?

• 'syntax error'

• 'message is not defined'

• 'unexpected token'

• 'variable is undefined'

What is the correct way to declare a variable in JavaScript as explained in the second section?

• var message = 'Hello World';

• message: 'Hello World';

• const message = 'Hello World';

• let message = 'Hello World';

How can the variable 'message' be used in the HTML as explained in the second section?

• By creating a new HTML element

• By updating the inner HTML of an element

• By using it in a CSS file

• By linking it to an external JavaScript file

What does the final section encourage students to do with the 'message' variable?

• Delete it

• Ignore it

• Experiment and customize it

• Use it only as instructed