如何在 Typescript 中循环 object？ 元素隐式具有“任何”类型，因为索引表达式不是“数字”类型

Question

得到

元素隐式具有'any'类型，因为索引表达式不是'number'类型。

interface User {
    name: string;
    username: string;
    profileImage: string;
}

let user:User = {
    name: 'john',
    profileImage: './1.jpg',
    username: 'john',
}

for(let userData of Object.keys(user)){
    console.log(userData[userData])
}

Answer 1

你可以试试

interface User {
    name: string;
    username: string;
    profileImage: string;
}

let user:User = {
    name: 'john',
    profileImage: './1.jpg',
    username: 'john',
}

for(let key in user){
    console.log(user[key as keyof User])
}