classConfig{hostname:string;port:number;constructor(hostname:string);constructor(hostname:string,port:number);constructor(hostname:string,port:number=8080){this.hostname=hostname;this.port=port;}showConfig(){console.log(`Hostname:${this.hostname}, Port:${this.port}`);}}constconfig1=newConfig(...
接下来我们创建一个类文件 class.ts,代码如下: classShape{area:number;color:string;constructor(name:string,width:number,height:number){this.area=width*height;this.color="pink";};shoutout(){return"I'm "+this.color+" "+this.name+" with an area of "+this.area+" cm squared.";}}varsquare=...
AI代码解释 classCache{constructor(){this._items={};}Cache(){}set(key,value){this._items[key]=value;console.log(`set cache with key: '${key}', value: '${value}'`);}get(key){letvalue=this._items[key];console.log(`get cache value: '${value}' with key: '${key}'`);returnval...
在TypeScript 中,我们可以通过 Class 关键字来定义一个类: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 class Greeter { static cname: string = 'Greeter'; // 静态属性 greeting: string; // 成员属行 constructor(message: string) { // 构造函数 - 执行初始化操作 this.greeting = message; }...
classRectangleextendsPolygon { publicconstructor(protectedreadonly width: number,protectedreadonly height: number) { super(); } publicgetArea(): number { returnthis.width*this.height; } } Try it Yourself » TypeScript Exercises Test Yourself With Exercises ...
() static member}** This is also how we refer to the class's constructor:** {@link controls.(Button:constructor) | the class constructor}** Sometimes a name has special characters that are not a legal TypeScript identifier:** {@link restProtocol.IServerResponse."first-name" | the ...
class Animal { constructor(private name: string) { } move(distanceInMeters: number) { console.log(`${this.name} moved ${distanceInMeters}m.`); } } 注意看我们是如何舍弃了theName,仅在构造函数里使用private name: string参数来创建和初始化name成员。我们把声明和赋值合并至一处。 参数属性通过给...
constructor(theName: string) { = theName; } getName(){ return } setName(name: string){ = name // 只能在当前类使用 } } class Rhino extends Animal { constructor() { super("Rhino");} } class Employee { private name: string;
Note that withStyles is demonstrating a specific rule, where a class (like StyledClass) that extends a value that’s generic and bounded by an abstract constructor (like Ctor) has to also be declared abstract. This is because there’s no way to know if a class with more abstract members ...
classPoint{x:number;y:number;// Normal signature with defaultsconstructor(x=0,y=0){this.x=x;this.y=y;}} class Point { // Overloads constructor(x: number, y: string); constructor(s: string); constructor(xs: any, y?: any) { ...