HTML CSS and JavaScript for Beginners - A Web Design Course - JavaScript Functions

This video tutorial covers the basics of JavaScript functions, including their creation, customization, and usage. It explains how functions can take parameters, return values, and be reused. The tutorial also demonstrates how to increment variables and use them within functions. A challenge is presented to create multiple functions that update values dynamically.

What is the primary purpose of functions in JavaScript?

• To create databases

• To style HTML elements

• To execute a block of code multiple times

• To store data permanently

How can you pass data into a JavaScript function?

• By passing arguments to the function

• By using a console log

• By declaring a global variable

• By using a return statement

What happens when you pass a value to a function in JavaScript?

• The function ignores the value

• The value is automatically logged to the console

• The value is stored in a global variable

• The function uses the value as an argument

How can you update HTML content using JavaScript functions?

• By creating a new HTML document

• By changing the CSS class

• By modifying the innerHTML property

• By using the alert function

What is the difference between global and local variables in JavaScript?

• Local variables are stored in the browser's memory

• Local variables can be accessed anywhere in the code

• Global variables are accessible throughout the code, while local variables are limited to the function

• Global variables are only accessible within a function

What does the shorthand 'b++' do in JavaScript?

• Decreases the value of b by one

• Divides the value of b by two

• Increases the value of b by one

• Multiplies the value of b by two

What is the result of clicking a button that triggers a function with an incrementing variable?

• The variable value decreases

• The variable value remains the same

• The variable value increases with each click

• The variable value resets to zero