JS Unit 5!

Complex Booleans

100

Result of: 

true && false

What is false?

200

let x = 5;

x > 3 || x < 0

What is true?

300

This operator flips a boolean.
 

What is ! (Not).

400

let a = 4;

let b = 9;

(a < 5 && b > 10) || !(a == 4)

What is false?

500

A player can jump only if they are on the ground, OR if they have a double jump available AND are NOT stunned. Write the expression that correctly represents that rule, using onGround, hasDoubleJump, and isStunned.
 

What is onGround || (hasDoubleJump && !isStunned).

if/else if/else

100

This keyword begins a conditional statement in JavaScript.

What is if?

200

This keyword runs a block of code when the if condition is false.

What is else?

300

let score = 75;

if (score >= 90) { console.log("A"); }
else if (score >= 80) { console.log("B"); }
else if (score >= 70) { console.log("C"); }
else { console.log("F"); }

 What is the output?

What is C?

400

Find the bug:

let lives = 3;

if(lives = 0){ console.log("You have no more lives");}
else{console.log("Let's play")}

What is if(lives = 0) should be if(lives == 0). 

500

let healt = 0;
let hasShield = true;

if (health > 0) { console.log("Alive"); } 

if (hasShield) { console.log("Protected"); }
else { console.log("Exposed"); }

The output? 

What is Protected?

While Loops

100

The name for a loop that never stops running. 

What is an infinite loop.

200

This is how many times "Go" prints: 

let i = 0;
while (i < 3)
{
    console.log("Go!");
    i++; 

}

What is 3?

300

This loop will run forever without this line: 

let enemies = 5;
while (enemies > 0) { console.log("Fighting!"); }

What is enemies-- or enemies = enemies - 1. 

400

The final value of count after the end of the loop.
let count = 10;
while (count > 2) { count -= 3; }

What is 1?

500

The number of times the loop will run. 

let x=0;
while(x<10){
x+=2;
x++;}

What is 4?

Vocabulary

100

A named container that stores a value in your program.

What is a variable?

200

This is the term for a value of true or false.

What is a boolean?

300

This term describes a reusable block of code that performs a task and can be called by name.

What is a function?

400

This is the term for the process of finding and fixing errors in your code.

What is debugging?

500

The term for a specific set of instructions for the computer to execute in an effort to complete a designated task. 

What is an algorithm?

Graphics

100

This graphics element is where JavaScript games draw their graphics.

What is the canvas?

200

This is the location of the origin (0, 0) on a canvas.

What is the top-left corner?

300

The two methods used to "get" the size of the canvas. 

What is getWidth() & getHeight()

400

The dimensions of the pole(p):
const buildWidth = 50;
const buildHeight =175;
const x = 150;
const y = getHeight();

let b = new Rectangle(buildWidth, buildHeight);
b.setPosition(x, y);
add(b)

let p = new Rectangle(5, buildHeight/7);
p.setPosition(x + (buildWidth/2), y - buildHeight);
add(p)

What is width: 5 height: 25. 

500

The position of the pole(p) - canvas size (400, 480):
const buildWidth = 50;
const buildHeight =175;
const x = 150;
const y = getHeight();

let b = new Rectangle(buildWidth, buildHeight);
b.setPosition(x, y);
add(b)

let p = new Rectangle(5, buildHeight/7);
p.setPosition(x + (buildWidth/2), y - buildHeight);
add(p)

What is (175, 305).