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JavaScript - Primitive Types

memorize.ai (lvl 286)

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Section 1

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Date created

Mar 1, 2020

Cards (6)

Section 1

(6 cards)

undefined

Front

A variable that has not been assigned a value

Back

null

Front

has exactly one value: null

Back

boolean

Front

represents a logical entity and can have two values: true, and false.

Back

number

Front

there is only one number type: the double-precision 64-bit binary format IEEE 754 value (numbers between -(253 -1) and 253 -1).

Back

string

Front

is used to represent textual data. It is a set of "elements" of 16-bit unsigned integer values

Back

symbol

Front

is a unique and immutable primitive value and may be used as the key of an Object property

Back