初识(typescript)--ts //接口
作者:互联网
接口:可用作约束多个对象,数组,函数
关键字:
声明接口 interface
实现接口 implements
//可选参数,对象的约束
interface peopleName{
fristName? : string,
lastName? : string,
}
// 定义多个方法
function teacher(name:peopleName) : void{
console.log(`语文老师叫: ${name.fristName} ${name.lastName}`);
}
function son(name:peopleName) : void{
console.log(`我的儿子叫: ${name.fristName} ${name.lastName}`);
}
// 在外部定义参数,参数体内只要含有接口定义的的即可,若在调用方法体内定义,则必须且只有接口内定义的函数
let obj ={
fristName : '李',
lastName : '白',
age: 18 ,
sex : 'man'
}
teacher(obj);
son({fristName:'小' , lastName : '龙人'}) //正确写法
// son({fristName :'小'}) //错误写法 若不是可选参数,及错误
接口继承接口
interface car {
name : string;
color : string;
way(name:string , color : string) :string
}
interface BBA extends car {
type():void;
}
class people implements BBA{
name :string;
color: string;
constructor(name :string , color : string){
this.name = name;
this.color = color
}
way(name: string, color: string): string {
return ` ${name} 可以爬山涉水`
}
type(): void {
console.log(this.name)
}
}
let woman = new people('女人','蓝色')
woman.type()
接口结合继承使用
// 实现接口
interface car {
name : string;
color : string;
way(name:string , color : string) :string
}
class BMW implements car{
name: string;
color: string;
constructor(name:string,color:string){
this.name = name;
this.color = color
}
way(name: string, color: string): string {
return `${color} ${name} 进入工厂`
}
}
class BMW_X1 extends BMW {
constructor(name:string , color:string ){
super(name,color)
}
way(name: string, color: string): string {
return `宝马类型: ${name} 颜色: ${color}`
}
}
let a = new BMW_X1 ('宝马X1','红色')
console.log(a)
标签:typescript,name,--,ts,接口,color,way,fristName,string 来源: https://blog.csdn.net/qq_41820930/article/details/122534008