8th Grade JS Jeopardy!

Variables

100

What do variables do?

Store data.

200

Name the 3 keywords used to create a variable in JavaScript

let, const, var

300

What is the data type of: "Heschel"?

String

400

What data type is 1.3?

Float

500

Write a JavaScript program that:

1. Creates a variable called score and sets it to 100

2. Adds 25 to the score variable using the += operator

let score = 100;

score += 25;

Console

100

What is the console used for?

The console is used to display data. (messages, errors, and results—like a hidden notepad for debugging.)

200

How do you display "Hello World" in the console?

console.log("Hello World");

300

What’s the correct way to display the value of a variable named score in the console?

console.log(score);

400

How do you log both a string ("Score:") and a variable (points)?

console.log("Score: " + points);

500

On the board, write two lines of code that will display the message My school is Heschel in the console, using a variable named school.

let school = "Heschel";

console.log("My school is " + school);

JavaScript Basics

100

What is JavaScript?

A programming language used to make websites more interactive.

200

What symbol is used for exponents?

**

300

What symbol is used for the remainder? (mod)

%

400

What symbol(s) are used for a single-line comment?

//

500

What symbol(s) are used for a multi-line comment?

/* */

Fix That Code!

100

Fix this code: let name = Heschel;

Missing quotes around Heschel

200

Fix this code: const pi = 3.14

Missing ;

300

Fix That Code: let isRaining = "false";

false should not have quotes around it.

400

Fix That Code: let 1stPlace = "winner";

The variable has to begin with a letter, not a number

500

Fix that Code:

var greeting = 'Hello';
console.log('greeting' + ' class!');

Should not have quotes around the variable name.

Random

100

What symbol do you put at the end of most lines in JavaScript?

;

200

What is a string in programming?

Text. 

A sequence of characters (e.g., "hello").

300

Name two types of data in JavaScript.

String, Boolean, Integer, Float

400

What is a Boolean, give an example on the board by writing a line of code that contains a boolean.

A true/false value.

500

Using prompt() and parseInt(), Declare a variable called classes which asks the user how many classes they have.

let classes = parseInt(prompt("How many classes do you have?"));