datatype.ts

// boolean
let isHandsome: boolean = true
console.log(isHandsome)

// number
let myBirthdayDate: number = 2
console.log(myBirthdayDate)

// string
let firtstname: string = 'fiqry'
let lastname: string = 'choerudin'
let fullname: string = firtstname + " " + lastname

// normal way
let sayHello: string = "Hello " + fullname
console.log(sayHello)

// using string subtitue
let wellHello: string = `Hello ${fullname}`
console.log(wellHello)