如何修复“TypeError: Cannot read property”items of undefined“

let data = { items: [] }; // 确保 data 已经被初始化
console.log(data.items);

if (data && data.items) {
    console.log(data.items);
} else {
    console.log('Data is undefined or items property is missing');
}

async function fetchData() {
    try {
        let response = await fetch('https://api.example.com/data');
        let data = await response.json();
        if (data && data.items) {
            console.log(data.items);
        } else {
            console.log('Data is undefined or items property is missing');
        }
    } catch (error) {
        console.error('Error fetching data:', error);
    }
}

fetchData();

let data = { items: [] }; // 假设 data 可能是 undefined
let items = (data || {}).items;
console.log(items);

function getItems() {
    // 模拟可能返回 undefined 的情况
    return Math.random() > 0.5 ? { items: ['item1', 'item2'] } : undefined;
}

let items = getItems();
if (items && items.items) {
    console.log(items.items);
} else {
    console.log('No items found');
}