TypeScript Beginner Tutorial 5 | Basic Variable Types 1
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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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