无法访问对象中的值

let obj = { name: "Alice" };
console.log(obj.Name); // 错误，应为 obj.name

function test() {
    let obj = { name: "Alice" };
    console.log(obj.name); // 正确
}
test();
console.log(obj.name); // 错误，obj 在全局作用域中不可见

let obj = { name: "Alice" };
if (obj && obj.name) {
    console.log(obj.name);
} else {
    console.log("Object or property is undefined");
}

let obj = { name: "Alice" };
if (typeof obj === 'object' && obj !== null) {
    console.log(obj.name);
} else {
    console.log("Object is not of expected type");
}

async function fetchData() {
    let response = await fetch('https://api.example.com/data');
    let data = await response.json();
    if (data && data.name) {
        console.log(data.name);
    }
}
fetchData();

let obj = { name: "Alice", age: 25 };

// 正确访问属性
console.log(obj.name); // 输出: Alice

// 处理未定义情况
if (obj && obj.age) {
    console.log(obj.age); // 输出: 25
} else {
    console.log("Age is undefined");
}

// 处理异步数据
async function fetchUserData() {
    let response = await fetch('https://api.example.com/user');
    let userData = await response.json();
    if (userData && userData.name) {
        console.log(userData.name);
    } else {
        console.log("User data is incomplete");
    }
}
fetchUserData();