JavaScript Quiz

What is a variable in JavaScript?

• A section of the website

• A way to store information that can be used later

• A type of function

• A loop that runs forever

Which of the following is a way to define an array in JavaScript?

• var colors = "red", "green", "blue";

• var colors = 1: "red", 2: "green", 3: "blue";

• var colors = ["red", "green", "blue"];

• var colors = (1 = "red", 2 = "green", 3 = "blue");

How do you declare a variable in JavaScript?

• var myVariable;

• variable myVariable;

• v myVariable;

• declare myVariable;

How do you create a variable with the numeric value 5?

• var x = 5;

• num x = 5;

• number x = 5;

• x = 5;

What is the output of the following code snippet? ```javascript var a = true; var b = false; var c = a + b; ```

• "truefalse"

• 1

• 0

• "1false"

What is a variable in JavaScript?

• A section of the document

• A type of JavaScript data

• A container for storing data values

• A command that performs a specific action

Which of the following is the correct way to declare a variable in JavaScript?

• `var name = "John";`

• `variable name = "John";`

• `String name = "John";`

• `name := "John";`

Why doesn't this code work?

Check all that apply.

• this program works just fine

• there is no variable called name

• you forgot to create the variable name

• you forgot set the variable name to the value of the prompt()

Which of the following is the correct way to declare a variable in JavaScript?

• `var myVariable = "Hello, World!";`

• `variable myVariable = "Hello, World!";`

• `myVariable: "Hello, World!";`

• `declare myVariable = "Hello, World!";`

JavaScript uses the _______ keyword to define variables.

• vrb
• var
• vari
• va