TypeError:无法读取未定义的“”commit“”属性

let obj = {}; // 确保对象已初始化
obj.commit = "some value";
console.log(obj.commit);

async function fetchData() {
    let response = await fetch('https://api.example.com/data');
    let data = await response.json();
    if (data) {
        console.log(data.commit);
    } else {
        console.error("数据未定义");
    }
}
fetchData();

let obj = getObject(); // 假设getObject()返回一个对象或undefined
if (obj) {
    console.log(obj.commit);
} else {
    console.error("对象未定义");
}

async function fetchData() {
    try {
        let response = await fetch('https://api.example.com/data');
        let data = await response.json();
        if (data && data.commit) {
            console.log(data.commit);
        } else {
            console.error("数据未定义或缺少commit属性");
        }
    } catch (error) {
        console.error("获取数据时发生错误:", error);
    }
}

fetchData();