asyncArrayIterator
A replacement for for..loop statement and clean up your code from such + passing asynchronous result from the iteration. Usually we pass a statement inside the loop, such as if (i == array.length - 1)
to check the loop has ended. It might be ok for small operation and start to become clunky when the array contains value which inherits lots of prototypes with method. Since for loop is synchronous, it's bad implementation for server side Node.js when you need to process async function inside it. asyncArrayIterator iterator pass a callback during iteration which will wait for all async function completion before moving to next iteration, which literaly you can wrap it inside a closure as well. If your for..loop return undefined, you might want to consider this as an option.
installation
npm i --save async-array-iterator
usage
var aai = var arrData = 1 2 3; { var newVal = arrayindex + 'add' } { console} // [ '1add', '2add', '3add' ]
Options Parameter
- array: (object) array being process
- iterator: (function) function for iterating arrays, augmented with 'array', 'index' and pass a 'callback' method
- exec: (function) final function executed after all iterating is done
- options: (object, optional) you can pass attributes parameter if your arrays objects inherit prototype values.
usage with options
var aai = var arrData = name: 'john' age: 24 name: 'sarah' age: 5 name: 'mickey' age: 13; { var newName = arrayindexname + ' travolta' var newAge = arrayindexage + 05 var data = newName newAge } { console} // [ { name: 'john travolta', age: 24.5 }, // { name: 'sarah travolta', age: 5.5 }, // { name: 'mickey travolta', age: 13.5 } ]
sample with using call()
var aai = var getName = first: null last: null { return thisfirst + ' ' + thislast } var arrData = first: 'John' last: 'Ados' first: 'Sarah' last: 'Gabon' first: 'Mickey' last: 'Mouse'; { var fullname = getNamefullname } { console} // [ 'John Ados', 'Sarah Gabon', 'Mickey Mouse' ]