Is Node.js Array.map() asynchronous?

Question

Can I count on nodeIDs mapping is completed every time doSomething() is called?

nodeIDs = $.map(nodeIDs, function(n){
    return n.match(/\\d+$/);
});
doSome         


        

Answer 1

import the async module to have an asynchronous 'map' method

var async = require('async');

var arr = ['1','2'];
async.map(arr, getInfo, function (e, r) {
  console.log(r);
});

function getInfo(name, callback) {
  setTimeout(function() {
    callback(null, name + 'new');
  }, 1000);
}