js获取action返回值

function fetchData() {
    return new Promise((resolve, reject) => {
        // 模拟异步操作，例如从服务器获取数据
        setTimeout(() => {
            const data = { message: 'Data fetched successfully' };
            resolve(data);
        }, 1000);
    });
}

fetchData()
    .then(data => {
        console.log('Action returned:', data);
    })
    .catch(error => {
        console.error('Error:', error);
    });

async function fetchData() {
    return new Promise((resolve, reject) => {
        setTimeout(() => {
            const data = { message: 'Data fetched successfully' };
            resolve(data);
        }, 1000);
    });
}

(async () => {
    try {
        const data = await fetchData();
        console.log('Action returned:', data);
    } catch (error) {
        console.error('Error:', error);
    }
})();