Modern Web Design with HTML5, CSS3, and JavaScript - JavaScript Functions

The video tutorial covers the fundamental aspects of functions in JavaScript, including their creation, invocation, and the importance of scope and variables. It explains how functions allow code reuse and how variables behave differently within function scopes. The tutorial also demonstrates variable reassignment and incrementing variables within functions, providing practical examples and encouraging viewers to explore further.

What is one of the main benefits of using functions in JavaScript?

• They prevent code from running.

• They allow for code reusability.

• They make code harder to read.

• They make code execution slower.

What happens if you call a function without rounded brackets?

• The function executes immediately.

• The function returns its code.

• The function throws an error.

• The function deletes itself.

Where can you find more information about JavaScript functions?

• Mozilla Developer Network

• JavaScript Weekly

• Stack Overflow

• Google Search

What is the scope of a variable declared inside a function?

• Local to the browser

• Local to the script

• Local to the function

• Global

What is the output order of console messages when invoking a function?

• First declared, after function, within function

• After function, within function, first declared

• Within function, first declared, after function

• First declared, then within function, then after function

What happens to a global variable when it is updated within a function?

• It becomes a local variable.

• It is updated globally.

• It is deleted.

• It remains unchanged.

How can you separate functionality when updating a global variable?

• By using a different programming language

• By using a loop

• By using a conditional statement

• By using a separate function