js根据城市名称获取城市代码

const cityCodes = {
    "北京": "BJ",
    "上海": "SH",
    "广州": "GZ",
    "深圳": "SZ"
};

function getCityCode(cityName) {
    return cityCodes[cityName] || "城市代码未找到";
}

console.log(getCityCode("北京")); // 输出: BJ
console.log(getCityCode("成都")); // 输出: 城市代码未找到

async function getCityCodeFromAPI(cityName) {
    try {
        const response = await fetch(`https://example.com/api/city-code?name=${cityName}`);
        const data = await response.json();
        return data.code || "城市代码未找到";
    } catch (error) {
        console.error("获取城市代码时出错:", error);
        return "获取城市代码失败";
    }
}

getCityCodeFromAPI("北京").then(console.log); // 输出: BJ
getCityCodeFromAPI("成都").then(console.log); // 输出: 城市代码未找到