mirror of https://github.com/jkjoy/sunpeiwen.git
36 lines
1.1 KiB
Markdown
36 lines
1.1 KiB
Markdown
# async-each
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No-bullshit, ultra-simple, 40-lines-of-code async parallel forEach function for JavaScript.
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We don't need junky 30K async libs. Really.
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For browsers and node.js.
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## Usage
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`npm install async-each` if you're using NPM.
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For browsers, just include async-each before your scripts and use global variable `asyncEach`
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* `each(array, iterator, callback)` — `Array`, `Function`, `(optional) Function`
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* `iterator(item, next)` receives current item and a callback that will mark the item as done. `next` callback receives optional `error, transformedItem` arguments.
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* `callback(error, transformedArray)` optionally receives first error and transformed result `Array`.
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```javascript
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var each = require('async-each');
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each(['a.js', 'b.js', 'c.js'], fs.readFile, function(error, contents) {
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if (error) console.error(error);
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console.log('Contents for a, b and c:', contents);
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});
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asyncEach(list, fn, callback); // use global var in browser
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```
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## License
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The MIT License (MIT)
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Copyright (c) 2016 Paul Miller [(paulmillr.com)](https://paulmillr.com)
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See [LICENSE](https://github.com/paulmillr/async-each/blob/master/LICENSE) file.
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