Modern Web Design with HTML5, CSS3, and JavaScript - JavaScript Function Recursion with Recursion Examples

The video tutorial explains recursion in JavaScript, highlighting its ability to create loops within functions. It demonstrates how a function can call itself until a base condition is met, effectively creating a loop. The tutorial provides examples of recursive functions, including a countdown and a backward loop, emphasizing the importance of having a base case to exit the loop. The video also discusses the significance of the return statement in ending the function and preventing infinite loops.

What is the primary purpose of a base condition in a recursive function?

• To make the function run faster

• To provide a way to exit the recursion

• To ensure the function runs indefinitely

• To increase the complexity of the function

In the countdown example, what happens when the base condition is met?

• The function stops calling itself

• The function resets the value

• The function continues to run

• The function doubles the value

How does the countdown recursive function modify the value of 'Val'?

• It divides 'Val' by 2

• It subtracts 1 from 'Val'

• It multiplies 'Val' by 2

• It adds 1 to 'Val'

In the count up example, what is returned when the base condition is no longer true?

• The function returns 'continue'

• The function returns 'start'

• The function returns 'end'

• The function returns 'loop'

What is a key difference between the countdown and count up recursion examples?

• The countdown example uses addition, while the count up uses subtraction

• The countdown example checks if 'Val' is less than one, while the count up checks if 'Val' is greater than zero

• The countdown example is faster than the count up

• The countdown example uses a different programming language