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21 lines
390 B

let person: { name: string; age: number; sayHi(): void; greet(name: string) : void } = {
name: 'Ken',
age: 20,
sayHi() {},
greet(name) {}
}
let person2: {
name: string
age: number
// sayHi: () => void
// 也可是使用箭头函数
sayHi: () => void
greet(name: string): void
} = {
name: 'Ken',
age: 20,
sayHi() {},
greet(name) {}
}