JS Variables, Values, Types & Operators

Data Types

100

Number

Data type used for math calculations?

200

the boolean

what data type has only two possible values?

300

string of characters

The datatype used to store words is a?

400

Null

Value used to express emptiness?

500

object

what datatype is not a primitive datatype?

Variables

100

var

What is the Pre-ES6 keyword used to declare variables?

200

let

What is the ES6 keyword for declaring a variable

300

Using the = (equal) operator

How to assign a value to a variable?

400

The const keyword

What is used to declare a variable whose value cannot change?

500

Infinity

What is largest number in JavaScript?

Return Booleans

100

Using the === operator

How to check for equality?

200

>

How to check if a number is greater than another?

300

!==

How to check if two values are not the same?

400

The || (OR) operator

What operator only needs one operand to be true for it to return true?

500

The && (AND) operator.

What symbol returns true only if both operands are truthy?

General

100

A variable

What is used to store values?

200

The number zero (0)

What is a numeric value that is falsy?

300

Concatenation

How to combine two strings?

400

a symbol to combine values into a single value

operator

500

A number but not quite

NaN