TypeScript Beginner Tutorial 5 | Basic Variable Types 1

Types of Variables:
Number
String
Boolean
Null
Undefined
Arrays

Number
let x: number = 10

String
let name: string = ‘TypeScript’

Boolean
let learningTypeScript: boolean = true

Static type checking, prevent from making mistakes
Accurate Intellisense

Undefined
A variable that has been declared but not yet assigned value
let u: undefined = undefined

Null
Null is assignment value. Can be assigned as representation of no value
let n: null = null

Null and undefined are sub types i.e. null and undefined can be assigned to boolean, number and string variables

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[nicolasma]

Hi, what you're doing at the end, assign null to num1 and undefined to nyName does not work. At least on my side. Perhaps some updates on Typescript ?