1.与高阶函数结合使用

// 异步过滤函数
async function asyncFilter(array, predicate) {const results = await Promise.all(array.map(predicate));return array.filter((_value, index) => results[index]);
}// 示例
async function isOddNumber(n) {await delay(100); // 模拟异步操作return n % 2 !== 0;
}async function filterOddNumbers(numbers) {return asyncFilter(numbers, isOddNumber);
}filterOddNumbers([1, 2, 3, 4, 5]).then(console.log); // 输出: [1, 3, 5]

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2.优化递归

// 异步递归函数
async function asyncRecursiveSearch(nodes) {for (const node of nodes) {await asyncProcess(node);if (node.children) {await asyncRecursiveSearch(node.children);}}
}// 示例
async function asyncProcess(node) {// 对节点进行异步处理逻辑
}

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3.异步初始化类实例

class Example {constructor(data) {this.data = data;}static async create() {const data = await fetchData(); // 异步获取数据return new Example(data);}
}// 使用方式
Example.create().then((exampleInstance) => {// 使用异步初始化的类实例
});

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4.控制并发数

async function asyncPool(poolLimit, array, iteratorFn) {const result = [];const executing = [];for (const item of array) {const p = Promise.resolve().then(() => iteratorFn(item, array));result.push(p);if (poolLimit <= array.length) {const e = p.then(() => executing.splice(executing.indexOf(e), 1));executing.push(e);if (executing.length >= poolLimit) {await Promise.race(executing);}}}return Promise.all(result);
}// 示例
async function uploadFile(file) {// 文件上传逻辑
}async function limitedFileUpload(files) {return asyncPool(3, files, uploadFile);
}

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5.链式调用

class ApiClient {constructor() {this.value = null;}async firstMethod() {this.value = await fetch('/first-url').then(r => r.json());return this;}async secondMethod() {this.value = await fetch('/second-url').then(r => r.json());return this;}
}// 使用方式
const client = new ApiClient();
const result = await client.firstMethod().then(c => c.secondMethod());

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6.简化错误处理

async function asyncOperation() {try {const result = await mightFailOperation();return result;} catch (error) {handleAsyncError(error);}
}async function mightFailOperation() {// 有可能失败的异步操作
}function handleAsyncError(error) {// 错误处理逻辑
}