AP CSP Javascript

Last updated over 3 years ago

16 questions

Note from the author:

Instructions

Functions with Parameters 1

1

Function with Parameters 2

1

Function with Return Values

1

Library

AP CSP Javascript

Last updated over 3 years ago

16 questions

Note from the author:

Functions with Parameters and Return Values

Instructions

Functions with Parameters 1

Watch the video above https://www.youtube.com/watch?v=31HHVsWU1Fc&t=283s until 4:00 then  remix the code below to practice afterwards.
https://studio.code.org/projects/applab/yWChCh8k-p6EzCGxbZ0pa3qptDUt9A4BGtnjFKwBR-I

Use the image attached to declare and call functions in Applab.

1

Function with Parameters 2

Watch the video above  and please use your remixed project.
https://studio.code.org/projects/applab/yWChCh8k-p6EzCGxbZ0pa3qptDUt9A4BGtnjFKwBR-I


Watch the video above https://www.youtube.com/watch?v=obwNNtwh7uw until 2:20 then  code along after. 
https://studio.code.org/projects/applab/yWChCh8k-p6EzCGxbZ0pa3qptDUt9A4BGtnjFKwBR-I

Image attached shows how to call doubleNumber(x) inside doubleBtn click event function. Implement sumBtn event function with sum(num1, num2) calls inside your code.

1

Function with Return Values

1

What happens if you try to print a function call when the function doesn't have a return value?

console.log( printNumbers(13,15,17) );
console.log ( sum(13,15,17) );

1

Code along with the video3 and revise the function doubleNumber to return a value.( video:2:15)

What happens if you try to call the function with a return value like below?
doubleNumber(6);
randomNumber(1,10);

1

List 3 things you have discovered today.

Functions with Parameters and Return Values

Watch the video above https://www.youtube.com/watch?v=31HHVsWU1Fc&t=283s until 4:00 then  remix the code below to practice afterwards.
https://studio.code.org/projects/applab/yWChCh8k-p6EzCGxbZ0pa3qptDUt9A4BGtnjFKwBR-I

Use the image attached to declare and call functions in Applab.

Why do we write functions?
I. Make our code easier to understand by giving a readable name to a group of instructions II. Avoid writing repeated code III. Make our code reusable

I only

II only

I and II

I, II, and III

When we put a variable between parenthesis, what is it called?

Parameter

Function

doubledX

In the following function printThreeTimes:

function printThreeTimes(word){
println(word);
println(word);
println(word);
}

What is the parameter of the function?

word

println

function

On which line is the "call" to the function doubleNumber on the video? (video: 4:50 )

1

2

5

6

What would I get if I called doubleNumber(10); ? (video: 5:01 )

10

x

2x

20

After you watched all the video, Define the printNumbers function that takes three integers and print them in given order

function printNumbers(two, one, zero){
println(two);
println(one);
println(zero);
}

Call printNumbers function whenever printNumberBtn is clicked (hint:onEvent("printNumberBtn", "click", function(){ call functions here } );
var zero =0;
var one=1;
var two= 2;
printNumbers(zero, one, two);

What will be displayed on the screen?

2
1
0

0
1
2

two
one
zero

two
zero
one

Revise the printNumbers function to print given parameters in below order.

function printNumbers(two, one, zero){
println(two);
println(zero);
println(zero);
println(one);
}

Revise the code inside printNumberBtn click event function as below.

printNumbers(12, 17, 65);

What will be displayed on the screen?

two
one
zero

two
zero
one

“It’s a bird! It’s a plane! No, it’s Superman!”
If it’s not a bird and it’s not a plane, it must be Superman.
We want to write a function isSuperman that takes in two boolean parameters isBird and isPlane and returns true if it is in fact Superman, not a bird and not a plane, and false otherwise.
Which of the following functions is the correct implementation of isSuperman?

True or False: Functions must have parameters.

True

False

Watch the video above  and please use your remixed project.
https://studio.code.org/projects/applab/yWChCh8k-p6EzCGxbZ0pa3qptDUt9A4BGtnjFKwBR-I


Watch the video above https://www.youtube.com/watch?v=obwNNtwh7uw until 2:20 then  code along after. 
https://studio.code.org/projects/applab/yWChCh8k-p6EzCGxbZ0pa3qptDUt9A4BGtnjFKwBR-I

Image attached shows how to call doubleNumber(x) inside doubleBtn click event function. Implement sumBtn event function with sum(num1, num2) calls inside your code.

How many parameters does the function sum use?

0

1

2

3

What would get printed if we added the code,
sum(4, 3); ?

4

3

7

Revise your doubleNumber() function to return value instead of printing it.

Replace all code inside doubleNumberBtn to below segment.

var numApples=4;
var twiceAsMany=doubleNumber(numApples);
println("Before : "+numApples);
println("After : "+twiceAsMany);

Will will be printed when this code is run?

Nothing will be printed

Before : 4
After  :8

What happens if you try to print a function call when the function doesn't have a return value?

console.log( printNumbers(13,15,17) );
console.log ( sum(13,15,17) );

Code along with the video3 and revise the function doubleNumber to return a value.( video:2:15)

What happens if you try to call the function with a return value like below?
doubleNumber(6);
randomNumber(1,10);

Revise doubleNumber(x) function and call it inside doubleNumberBtn as shown below.

What is printed on the display?

Before : 4
Atter: 8

Before: 8
After: 8

List 3 things you have discovered today.

Why do we write functions?
I. Make our code easier to understand by giving a readable name to a group of instructions
II. Avoid writing repeated code
III. Make our code reusable

I only

II only

I and II

I, II, and III

When we put a variable between parenthesis, what is it called?

Parameter

Function

doubledX

In the following function printThreeTimes:  

function printThreeTimes(word){
     println(word);
     println(word);
     println(word);
}

What is the parameter of the function?

word

println

function

On which line is the "call" to the function doubleNumber on the video? (video: 4:50 )

1

2

5

6

What would I get if I called doubleNumber(10); ? (video: 5:01 )

10

x

2x

20

After you watched all the video, Define the printNumbers function that takes three integers and print them in given order

         function printNumbers(two, one, zero){ 
                         println(two);
                         println(one);
                         println(zero);
         }


Call printNumbers function whenever printNumberBtn is clicked (hint:onEvent("printNumberBtn", "click", function(){ call functions here } );
        var zero =0;
        var one=1;
        var two= 2;
        printNumbers(zero, one, two);



What will be displayed on the screen? 

2
1
0

0
1
2

two
one
zero

two
zero
one

Revise the printNumbers function to  print  given parameters  in below order.

         function printNumbers(two, one, zero){ 
                         println(two);
                         println(zero);
                         println(zero);
                         println(one);
         }


Revise the code inside   printNumberBtn  click event function as below.

        printNumbers(12, 17, 65);

What will be displayed on the screen? 

two
one
zero

two
zero
one

“It’s a bird! It’s a plane! No, it’s Superman!” 
If it’s not a bird and it’s not a plane, it must be Superman.

We want to write a function isSuperman that takes in two boolean parameters isBird and isPlane and returns true if it is in fact Superman, not a bird and not a plane,  and false otherwise.

Which of the following functions is the correct implementation of isSuperman?

True or False: Functions must have parameters.

True

False

How many parameters does the function sum use?

0

1

2

3

What would get printed if we added the code,
sum(4, 3); ?

4

3

7

Revise your doubleNumber() function to return value instead of printing it. 

Replace all code inside doubleNumberBtn to below segment.

var numApples=4;
var twiceAsMany=doubleNumber(numApples);
println("Before : "+numApples);
println("After : "+twiceAsMany);


Will will be printed when this code is run?

Nothing will be printed

Before : 4
After  :8

Revise doubleNumber(x) function and call it inside doubleNumberBtn as shown below.

What is printed on the display?

Before : 4
Atter: 8

Before: 8
After: 8

AP CSP Javascript

AP CSP Javascript

What happens if you try to print a function call when the function doesn't have a return value?console.log( printNumbers(13,15,17) );console.log ( sum(13,15,17) );

Code along with the video3 and revise the function doubleNumber to return a value.( video:2:15)What happens if you try to call the function with a return value like below?doubleNumber(6);randomNumber(1,10);

List 3 things you have discovered today.

Why do we write functions?I. Make our code easier to understand by giving a readable name to a group of instructions II. Avoid writing repeated code III. Make our code reusable

When we put a variable between parenthesis, what is it called?

In the following function printThreeTimes: function printThreeTimes(word){ println(word); println(word); println(word);}What is the parameter of the function?

On which line is the "call" to the function doubleNumber on the video? (video: 4:50 )

What would I get if I called doubleNumber(10); ? (video: 5:01 )

True or False: Functions must have parameters.

How many parameters does the function sum use?

What would get printed if we added the code,sum(4, 3); ?

Revise your doubleNumber() function to return value instead of printing it. Replace all code inside doubleNumberBtn to below segment.var numApples=4;var twiceAsMany=doubleNumber(numApples);println("Before : "+numApples);println("After : "+twiceAsMany);Will will be printed when this code is run?

What happens if you try to print a function call when the function doesn't have a return value?console.log( printNumbers(13,15,17) );console.log ( sum(13,15,17) );

Code along with the video3 and revise the function doubleNumber to return a value.( video:2:15)What happens if you try to call the function with a return value like below?doubleNumber(6);randomNumber(1,10);

Revise doubleNumber(x) function and call it inside doubleNumberBtn as shown below.What is printed on the display?

List 3 things you have discovered today.

What happens if you try to print a function call when the function doesn't have a return value?

console.log( printNumbers(13,15,17) );
console.log ( sum(13,15,17) );

Code along with the video3 and revise the function doubleNumber to return a value.( video:2:15)

What happens if you try to call the function with a return value like below?
doubleNumber(6);
randomNumber(1,10);

Why do we write functions?
I. Make our code easier to understand by giving a readable name to a group of instructions II. Avoid writing repeated code III. Make our code reusable

In the following function printThreeTimes:

function printThreeTimes(word){
println(word);
println(word);
println(word);
}

What is the parameter of the function?

What would get printed if we added the code,
sum(4, 3); ?

What happens if you try to print a function call when the function doesn't have a return value?

console.log( printNumbers(13,15,17) );
console.log ( sum(13,15,17) );

Code along with the video3 and revise the function doubleNumber to return a value.( video:2:15)

What happens if you try to call the function with a return value like below?
doubleNumber(6);
randomNumber(1,10);

Revise doubleNumber(x) function and call it inside doubleNumberBtn as shown below.

What is printed on the display?