typescript interface 2 types code example
Example 1: typescript class implements interface
interface Task{
name: String;
run(arg: any):void;
}
class MyTask implements Task{
name: String;
constructor(name: String) {
this.name = name;
}
run(arg: any): void {
console.log(`running: ${this.name}, arg: ${arg}`);
}
}
let myTask: Task = new MyTask('someTask');
myTask.run("test");
Example 2: custom types in typescript
type Websites = 'www.google.com' | 'reddit.com';
let mySite: Websites = 'www.google.com'
let mySite: Website = 'www.yahoo.com'
type Details = { id: number, name: string, age: number };
let student: Details = { id: 803, name: 'Max', age: 13 };
let student: Details = { id: 803, name: 'Max', age: 13, address: 'Delhi' }
let student: Details = { id: 803, name: 'Max', age: '13' };
Example 3: typescript interface
interface NumberOrStringDictionary {
[index: string]: number | string;
length: number;
name: string;
}Try
Example 4: typescript type interface
interface Animal { type Animal = {
name: string; name: string;
} }
interface Bear extends Animal { type Bear = Animal & {
honey: boolean; honey: Boolean;
} }
const bear = getBear(); const bear = getBear();
bear.name; bear.name;
bear.honey; bear.honey;