Javascript如何处理异步操作？

JavaScript通过回调函数、Promises和async/await来处理异步操作。

示例（使用Promises）：

function asyncOperation() {
    return new Promise((resolve, reject) => {
        setTimeout(() => {
            resolve('Operation complete');
        }, 1000);
    });
}

asyncOperation().then(result => {
    console.log(result);
});

示例（使用async/await）：

async function asyncOperation() {
    return new Promise((resolve, reject) => {
        setTimeout(() => {
            resolve('Operation complete');
        }, 1000);
    });
}

async function runAsync() {
    const result = await asyncOperation();
    console.log(result);
}

runAsync();