Understanding Variables in JavaScript

Front

What is a variable in programming?

Back

A container for a value

Front

In JavaScript, which keyword is used to declare a variable? Options: var, let, const, declare

Back

let

Front

What is the purpose of the assignment operator in JavaScript?

Back

To assign a value to a variable

Front

Fill in the blank: In programming, a variable is like a ______.

Back

box

Front

What is the value of variable X after executing 'let X = 30;'?

Back

30

Front

What types of values can we store in variables? Numbers, Booleans, Strings, All of the above.

Back

All of the above.

Front

Integers are positive or negative whole numbers, including which of the following? 0, 2, 21, All of the above.

Back

All of the above.

Front

What is a float in JavaScript?

Back

A number with a decimal

Front

To represent the cost of an item as a float, which of the following could be used? A) 40.25, B) 22, C) 99, D) 0

Back

40.25

Front

Which of the following is an example of a string in JavaScript?
Options: "Carol", 22, true, 40.25

Back

"Carol"