Learn JavaScript from Scratch JavaScript for Everyone - Getting Your Hands Dirty

The video tutorial guides viewers through setting up a CodePen account to write JavaScript code. It demonstrates using the alert function and explains its syntax. The tutorial emphasizes the importance of the console for debugging and shows how to access and use the browser console. Finally, it covers customizing the CodePen interface, including switching to dark mode.

What is the primary purpose of using CodePen as mentioned in the tutorial?

• To write and test JavaScript code along with HTML and CSS.

• To create complex server-side applications.

• To design graphics and animations.

• To manage databases and backend services.

What is the function of the alert command in JavaScript?

• To log messages to the console.

• To style HTML elements.

• To connect to a database.

• To display a message box to the user.

Which of the following is true about semicolons in JavaScript?

• They are mandatory at the end of every line.

• They are optional but recommended for clarity.

• They are used to comment out code.

• They are used to declare variables.

What is the purpose of console.log in JavaScript?

• To create a new HTML element.

• To display messages in a pop-up alert.

• To connect to an external API.

• To log messages to the console for debugging.

How can you clear the console in a browser?

• By closing and reopening the browser.

• By pressing Control L or Command K.

• By using the clear() function.

• By refreshing the page.