eachy

eachy

A tiny (18 lines of code) async each implementation that supports CommonJS, AMD, and VanillaJS.

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.');
});