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Typescript~接口
阅读量:260 次
发布时间:2019-03-01

本文共 463 字,大约阅读时间需要 1 分钟。

/** * 接口约束了一种规范. 多一个属性和少一个属性都是不允许的 * ?表示可选属性,就是有没有都行 */interface Person {    name: string;    age?: number;}let jianan: Person = {    name: "jianan",    // age: 26}//-----用接口描述数组interface NumberArray {    [index: number]: number}let fib: NumberArray = [1,2,3,4,5];//-----只读属性interface Person2 {    readonly id: number;    name: string;    age?: number;    [propName: string]: any;}let tom: Person2 = {    id: 10010,    name: "jianan",}// tom.id = 11; //只读属性不可以被赋值

 

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