eachy

eachy

A tiny (16 lines of code) serial async each implementation that supports CommonJS, AMD, and VanillaJS. The minified file eachy.min.js is just 270 bytes.

Install

npm install eachy

bower install eachy

Usage

asyncEach(array, iterator, callback)

Arguments

• array - An array to iterate over
• iterator(item, callback, index) - A function called for each item in the array. The callback(err) takes a single, optional argument, an error. The index value is index of the item in the array.
• callback(err) - The callback that is called when all iterator functions are finished or an error occurs.

Examples

Browser (No module loader)

<script src="/js/eachy.js"></script>
<script>
  // asyncEach is a global bound to the window object now
  asyncEach(['hi', 'i love', 'alerts'], function(word, done) {
    alert(word);
    done();
  });
</script>

Node.js

var asyncEach = require('eachy');
var fs = require('fs');

asyncEach(['robots.txt', 'todo.txt'], function(file, done) {
  fs.readFile(file, function(err, data) {
    if (err) return done(err);
    console.log(data);
    done();
  });
}, function(err) {
  console.log('You should have all the information you need now.');
});