Introduction To Website Development Technologies - JavaScript Functions

The video tutorial covers control structures in JavaScript, emphasizing their transferable nature across programming languages. It introduces methods, highlighting their reusability, using console.log as an example. The tutorial then delves into creating custom methods, explaining the process of defining functions, using parameters, and returning values. It demonstrates practical examples, such as printing messages and calculating products, to illustrate the efficiency and flexibility of using functions in coding.

What is the primary benefit of using methods in programming?

• They make code run faster.

• They help in debugging code.

• They allow code to be reused multiple times.

• They make code more secure.

Which of the following is an example of a built-in method in JavaScript?

• console.log

• print.message

• show.alert

• display.text

What keyword is used to define a function in JavaScript?

• define

• create

• method

• function

Why is it important to name functions according to their purpose?

• To ensure the function runs correctly.

• To make the code look professional.

• To avoid confusion when revisiting the code later.

• To make the function execute faster.

What happens if you modify a function's definition in a text file?

• It has no effect on the function.

• It creates a new function.

• It deletes the old function.

• It updates the function for the entire document.

What is a parameter in the context of functions?

• A method to call a function.

• A variable that stores a value passed to a function.

• A function that returns a value.

• A fixed value inside a function.

How can you store the result of a function that returns a value?

• By assigning it to a variable.

• By using a print statement.

• By using a console.log statement.

• By calling the function again.

What is the result of calling a function with parameters?

• The function returns the parameters as they are.

• The function uses the parameters to perform its task.

• The parameters are ignored.

• The function executes without using the parameters.

What is the purpose of a return statement in a function?

• To stop the function from executing.

• To print a message to the console.

• To send a value back to the caller of the function.

• To call another function.

How can you use the result of one function as an input to another?

• By copying the code of the first function.

• By using a loop.

• By nesting the function calls.

• By using a global variable.