interface or type typescript code example
Example 1: typescript class interface
interface IPerson {
name: string
age: number
hobby?: string[]
}
class Person implements IPerson {
name: string
age: number
hobby?: string[]
constructor(name: string, age: number, hobby: string[]) {
this.name = name
this.age = age
this.hobby = hobby
}
}
const output = new Person('john doe', 23, ['swimming', 'traveling', 'badminton'])
console.log(output)
Example 2: typescript interface vs type
interface Car {
name: string;
brand: string;
price: number;
}
type Car = {
name: string;
brand: string;
price: number;
}
interface Car extends Vehicle {
name: string;
brand: string;
price: number;
}
type Car = Vehicle & {
name: string;
brand: string;
price: number;
}
Example 3: typescript interface
interface LabeledValue {
label: string;
}
function printLabel(labeledObj: LabeledValue) {
console.log(labeledObj.label);
}
let myObj = { size: 10, label: "Size 10 Object" };
printLabel(myObj);Try