Boolean
let isBoolean: boolean;
let isBone: boolean = false;
숫자: Number
let num: number;
let integer: number = 6;
let float: number = 3.14;
let hex: number = 0xf00d; //61453
let binary: number = 0b1010; // 10
let octal: number = 0o744; // 484
let infinity: number = Infinity;
let nan: number = NaN;
문자열: String
let str: string;
let red: string = 'red';
let grenn: sttring = 'green';
let myColor: string = 'my color is ${red}';
let yourColor: string = 'Your color is' + green;
배열: Array