async
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开发工具：JavaScript
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上传日期：2023-03-02 18:00:01
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sh-1993
说明： 节点和浏览器的异步实用程序
(Async utilities for node and the browser)
文件列表:
.babelrc (160, 2023-12-02)
.editorconfig (245, 2023-12-02)
.eslintignore (33, 2023-12-02)
.eslintrc.json (1320, 2023-12-02)
.npmignore (70, 2023-12-02)
CHANGELOG.md (33481, 2023-12-02)
LICENSE (1063, 2023-12-02)
Makefile (4804, 2023-12-02)
bower.json (239, 2023-12-02)
dist/ (0, 2023-12-02)
dist/async.js (224915, 2023-12-02)
dist/async.min.js (21788, 2023-12-02)
docs/ (0, 2023-12-02)
docs/.nojekyll (0, 2023-12-02)
docs/index.html (51, 2023-12-02)
docs/v2/ (0, 2023-12-02)
docs/v2/apply.js.html (12287, 2023-12-02)
docs/v2/applyEach.js.html (12088, 2023-12-02)
docs/v2/applyEachSeries.js.html (11584, 2023-12-02)
docs/v2/asyncify.js.html (13732, 2023-12-02)
docs/v2/auto.js.html (19938, 2023-12-02)
docs/v2/autoInject.js.html (16861, 2023-12-02)
docs/v2/cargo.js.html (15066, 2023-12-02)
docs/v2/compose.js.html (11861, 2023-12-02)
docs/v2/concat.js.html (11899, 2023-12-02)
docs/v2/concatLimit.js.html (12338, 2023-12-02)
docs/v2/concatSeries.js.html (11565, 2023-12-02)
docs/v2/constant.js.html (12146, 2023-12-02)
docs/v2/data/ (0, 2023-12-02)
docs/v2/data/methodNames.json (1350, 2023-12-02)
docs/v2/data/sourceFiles.json (1742, 2023-12-02)
... ...
[](https://www.npmjs.com/package/async)
[](https://coveralls.io/r/caolan/async?branch=master)
[](https://gitter.im/caolan/async?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
[](https://www.jsdelivr.com/package/npm/async)
Async is a utility module which provides straight-forward, powerful functions for working with [asynchronous JavaScript](http://caolan.github.io/async/v3/global.html). Although originally designed for use with [Node.js](https://nodejs.org/) and installable via `npm i async`, it can also be used directly in the browser. A ESM/MJS version is included in the main `async` package that should automatically be used with compatible bundlers such as Webpack and Rollup.
A pure ESM version of Async is available as [`async-es`](https://www.npmjs.com/package/async-es).
For Documentation, visit
*For Async v1.5.x documentation, go [HERE](https://github.com/caolan/async/blob/v1.5.2/README.md)*
```javascript
// for use with Node-style callbacks...
var async = require("async");
var obj = {dev: "/dev.json", test: "/test.json", prod: "/prod.json"};
var configs = {};
async.forEachOf(obj, (value, key, callback) => {
fs.readFile(__dirname + value, "utf8", (err, data) => {
if (err) return callback(err);
try {
configs[key] = JSON.parse(data);
} catch (e) {
return callback(e);
}
callback();
});
}, err => {
if (err) console.error(err.message);
// configs is now a map of JSON data
doSomethingWith(configs);
});
```
```javascript
var async = require("async");
// ...or ES2017 async functions
async.mapLimit(urls, 5, async function(url) {
const response = await fetch(url)
return response.body
}, (err, results) => {
if (err) throw err
// results is now an array of the response bodies
console.log(results)
})
```
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