ts反对的数据类型有：__Boolean、Number、String、Array、Tuple、Enum、Any、Void、Null、Undefined、Never、Object
Boolean、Number、String
let isBoolean: boolean = falselet number1: number = 123let str1: string = `hello world`
Array数组
let list1: number[] = [1, 2, 3]let list2: Array<number> = [1, 2, 3]
Tuple元组，一种非凡构造的数组
let x: [string, number] = ['123', 456]x = ['456', 45678]
Enum枚举, 等号前面为枚举值，默认从0开始，能够自定义
enum Color { Red = 'red', Green = 'green', Blue = 'blue'}enum Color1 { Red, Green, Blue}let c: Color = Color.Red
Any,代表任意数据类型，无数据类型限度
let bool: any = falsebool = 'test'
Void 无数据类型或者在函数中无返回值，与any相同
function f(): void { console.log('this is void function')}
Null and Undefined,非凡的原始类型
let u: undefined = undefinedlet n: null = null
Never是所有类型的子类型，并且能够调配给每个类型，然而没有类型是never的子类型或者能够调配给never，除了其自身
function error(message: string): never { throw new Error(message);}// Inferred return type is neverfunction fail() { return error("Something failed");}// Function returning never must have unreachable end pointfunction infiniteLoop(): never { while (true) { }}
Object非原始类型也就是除number，string，boolean，symbol，null或undefined之外的类型
declare function create(o: object | null): void;create({ prop: 0 }); // OKcreate(null); // OKcreate(42); // Errorcreate("string"); // Errorcreate(false); // Errorcreate(undefined); // Error
类型断言 通常用作当ts无奈辨认某个值的详细信息时候强制类型转换有两种写法,例如援用高德地图ts会报amap undefined谬误，可将window转为any
let someValue: any = "this is a string";let strLength: number = (<string>someValue).length;let someValue: any = "this is a string";let strLength: number = (someValue as string).length;const { AMap } = window as any;