TS 变量类型

underfined

var age: number;
console.log(age); //underfind

number：数值类型

var age: number = 18;
var stature: number = 178.5;

console.log(age);      //18
console.log(stature); //178.5

string：字符类型

var qs: string = '浅殇';
console.log(qs); //浅殇

boolean：布尔类型

var a: boolean = true;
var b: boolean = false;
console.log(a); //true
console.log(b); //false

enum：枚举类型

enum REN { nan, nv, yao };
console.log(REN.yao); //2

enum REN { nan = '男人', nv = '女人', yao = '妖' };
console.log(REN.yao); //妖

any：任意类型

var t: any = 10;
t = '浅殇';
t = true;

console.log(t); //true

void：空类型

array：数组类型

tuple：元祖类型

null：空类型