JavaScript Programming Jeopardy

Random

100

What country is Jake in right now?

What is Korea

200

This keyword is used to create a variable in JavaScript

what is "var"

300

Name one industry that is not "tech" where programming is used

There's a lot :)

400

What is one thing that a software engineer does at work that is not writing code

*Instructor will grade this answer*

500

Explain why the number of likes and views on youtube videos changes so much when you're looking at it (We watched a video about this)

*Instructor will grade this answer*

Strings

100

What symbols should go around words to make them into a string?

" " (Quotes)

200

How do you get the length of a string

s.length

300

What is the index of the "w" in "Hello world!"

6

400

What function is used to get the index of the first occurrence of a character in a string?

.indexOf(character)

500

What function call would I use to get only the "name" out of var s = "My name is James"

s.slice(3, 7)

Math

100

What symbol is used to multiply (for example, a multiplied by b)

a * b

200

Describe a way to increase a variable "count" by 1

count++

count+= 1

count = count + 1

300

What symbol is used to get the remainder of a division operation?

% (modulo)

400

What operation is used to round a number up to the nearest whole number

Math.ceil()

500

What expression could I use to get a random whole number between 1 and 100

Math.floor(Math.random() * 100 + 1)

Booleans

100

What are the 2 possible boolean values

True, False

200

What operator could you use to return true if a number a is NOT equal to a number b

a != b

!(a == b)

300

What symbol(s) can I use to return true if 2 boolean expressions are true, and false otherwise

&&

400

What expression could I use to return true if number n is less than number a but greater than number b

n < a && n > b

500

Write an expression to return true if variables a and b are both true, or return true if variables c and d are both true and variable a is false

(a && b) || (c && d && !a)

(There are other ways to do this too)

If..else if..else

100

What is the structure of a proper if statement (with no else if or else)

if (condition) {

code

}

200

What will the following statement print?

If (true) {print("Hello ")}

If (13 != 12) {print("World")}

else {print("!")}

Hello World

300

What will the following statement print?

if (1 == 1) {print("Hello")}

else if (true) {print("World")}

if (false) {print("!")}

"Hello"

400

How many else ifs am I allowed to add after an if statement

There is (technically) no limit

500

What will x be equal to at the end of this statement?

x = 0

if (x) {x += 1}

if (!x) {x += 5}

else if (x > -1) {x += 10}

else {x = 99}

11