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How much does it cost to recruit Node.js developers? – Everything else

I agree that there are many important things you should be careful about when hiring a Node.js developer to make sure you will have no problems in the future. The responsibilities of the developer of Node.js, the skills he should have, etc., you must consider all of this. For example, Node.js developers need to be familiar with Agile development methods to be able to follow them during product development. The methodology allows planning, design and testing to be organized during the development cycle, which greatly simplifies the whole process.

I urge you to read guides on how to recruit Node.js developers before starting the whole process to better understand the type of specialist you want to hire. Lately, I have read many articles on this subject and came across this incredible guide. Discover it: https://www.cleveroad.com/blog/how-to-hire-nodejs-developers

.

node.js – jquery error when using static folder in express

not sure of the problem. but i have a static file in express.
on the template page

sure app.use (& # 39; / jquery & # 39 ;, express.static (__ dirname + & # 39; / node_modules / jquery / src & # 39;));

my css directory works app.use (& # 39; / css & # 39 ;, express.static (__ dirname + & # 39; / node_modules / bootstrap / dist / css & # 39;));

The error I receive is

ReferenceError: define is not defined[Learn More] jquery.js: 1: 1
 jQuery

CrocWeb :: LiteSpeed ​​+ LSCache | Unlimited BW | Python and ruby ​​| Node.JS | FREE SSL :: 80% off !!!

CrocWeb, established in 2009, is one of Canada's leading providers of web hosting offering quality service and quality support. CrocWeb maintains and operates its own BGP network (AS63068). Our servers are built using the latest technology and housed in the only carrier hotel located in the heart of Montreal. Our company is passionate about hosting and we strive to provide an excellent level of service to each and every guest.

Our web hosting packages are suitable for small, medium sized blogs, personal, charitable or commercial websites.

Main Features:

  • 24/7 technical support
  • 60-day money back guarantee
  • 99.9% uptime guarantee
  • Storing solid state discs
  • LiteSpeed ​​Web Server
  • LiteSpeed ​​Cache (LSCache)
  • MariaDB (MySQL)
  • Several versions of PHP (5.3, 5.4, 5.5, 5.6, 7.0, 7.1, 7.2, 7.3)
  • Node.js selector
  • Python and Ruby selector
  • Daily backups (30 restore points)
  • Softaculous Auto Installer
  • Free Website (SitePad)
  • FREE and unlimited SSL certificates (Let Encrypt)
  • FREE cPanel Migration
  • and much more!

WebHostingTalk special offer! Get 80% off your first bill!
Promotional code: CROCWEB80WHT2019

»» »» »»

Croco egg
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" 10 GB Pure SSD storage
" Unlimited Bandwidth

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Crocodile baby
»» »» »»

" 20 GB Pure SSD storage
" Unlimited Bandwidth

Starting at $ 4.95 / month, including free and instant installation!
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Adult Fang
»» »» »»

" 50 GB Pure SSD storage
" Unlimited Bandwidth

Starting at $ 6.95 / month, including free and instant installation!
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angularjs – How can I run multiple SELECT queries synchronously in NodeJs MySQL?

I'm developing a new function in an AngularJS application with NodeJSwhich was already finished (I did not do it myself) but they asked for changes. This is a kind of Web application in an executable .EXE file generated with Electron.

Until now, all database query functions need only a SELECT FROM and that is all. All queries, insertions, updates, etc. of the database are done with NodeJS MySQL.

I need to create a FOR loop with a SELECT query, to which I modify the parameters for each element traversed.

My problem is that the consultations are done asynchronouslyThus, the FOR is first executed, it calls the service, then the part of the code that continues outside the FOR is executed and finally, the service function is executed.

That in the numerical order would be something like 1, 3, 2, which is not a normal order.

What I want to know is if there is a way to do it synchronously, I've tried everything, I even installed a module called "async" recommended by StackOverflow in English and nothing, everything is asynchronous.

I've also tried to remove the promise of service and resolve the result to the controller via a callback, even if everything is done asynchronously.

ContainerController.js

data = [];
var reference = container.article;

for (var i = 0; i <contenedor.detalles.length; i ++) {
ContainerService.verifyPieceStatus (serial number, reference, i) .then (function (estatePieza) {
if (statePieza == null) {
// MISCELLANEOUS CONTROLS ...
}
});
}

ContainerService.js

angular.module (& # 39; app & # 39;)
.service (& # 39; ContainerService & # 39 ;, ['$q', "BBDDService", "$rootScope", ContenedorService])

ContainerService function ($ q, BBDDService, $ rootScope) {
back {
verifyStatePieza: verifyStatePieza
};
}

function verifyStatePiece (serial number, reference, currentPosition) {
deferred var = $ q.defer ();
var promise = UtilsService.hayConexionMySQL ();

returns promise.alors (function (res) {
if (res.alive === true) {
var connection = BBDDService.crearConexionMySQL ();
connection.connect ();

step (
getReference () function
var query = "";

if (serial_number.startsWith ("& * 01 # P")) {
query = "select * from piezas.estado_piezas" +
"where number_series =?";

connection.query (request, [numero_serie], that);
} else {
query = "select * from piezas.estado_piezas" +
"where number_serie =? and reference =?";
connection.query (request, [numero_serie, referencia], that);
}
}
function processStatePieza (error, lines) {
if (error) {
deferred.resolve ("error_consult" + error.message);
} else if (rows.length == 1) {
var estadoPieza = rows[0];

if (statePieza == null || statePieza.reference == null) {
statePieza = "no_estadoPieza";
}

deferred.resolve (Pieza state);
} else {
deferred.resolve ("no_estadoPieza");
}

connection.destroy ();
deferred return.promises;
}
)
}
});

node.js – Rabbitmq: Sending Messages – Software Engineering Stack Exchange

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node.js – How to count elements and paginate the result of the query in Loopback 4?

I have the following repository:

import {DefaultCrudRepository} from & # 39; @ loopback / repository & # 39 ;;
import {user} from & # 39; ../ models & # 39 ;;
import {DbDataSource} from & # 39; ../ datasources & # 39 ;;
import {inject} from & # 39; @ loopback / core & # 39 ;;

UserRepository Export Class Extends DefaultCrudRepository {
builder
@inject (datasources.db) dataSource: DbDataSource,
) {
super (user, data source);
}
}

On my controller, when I run this.userRepository.find () has returned all registered users in my database, however, I have to return this paged result, I have passed the options limit and eccentric for the method find () but I need the total number of found users.

Problems with NodeJS: TypeError: app.use () needs a middleware function

It is true that the pregnancy is over, but sincerely neither. Soy novato, aclaro. Benefits are not related to the problem and are subject to a power that is created, but that is problematic. El código es básico:

const express = require (& # 39;);
const path = require (& # 39;) & # 39;

const app = express ();
const routes = require (& # 39; / routes / index & # 39;);

// settings
app.set ('visualization engine', 'ejs');
app.set (views), path.join (__ directname, views);
app.set ("port", process.env.PORT || 3000);

// middlewares
app.use (express.json);
app.use (express.urlencoded ({extended: false}));

// itineraries
app.use (roads);

// static fields
app.use (express.static (path.join (__ directory name, & # 39; public & # 39;)));

// start the server
app.listen (app.get (& # 39;)), () => {
console.log ("Server on the port" + app.get ("port"));
});

El package.json:

{
"name": "node",
"version": "1.0.0",
"the description": "",
"main": "app.js",
"scripts": {
"start": "node app.js",
"dev": "nodemon app.js",
"test": "echo " Error: no test specified  "&& exit 1"
}
"keywords": [],
"author": "",
"license": "ISC",
"dependencies": {
"ejs": "^ 2.6.1",
"express": "^ 4.16.4"
}
"devDependencies": {
"nodemon": "^ 1.18.10"
}
}

y the error:

TypeError: app.use () requires a middleware function
to Function.use (C: Users nestor Desktop node modules_node express lib application.js: 210: 11)
to the object. (C: Users nestor Office Node app.js: 17: 5)
in Module._compile (internal / modules / cjs / loader.js: 689: 30)
on Object.Module._extensions..js (internal / modules / cjs / loader.js: 700: 10)
on Module.load (internal / modules / cjs / loader.js: 599: 32)
on tryModuleLoad (internal / modules / cjs / loader.js: 538: 12)
on Function.Module._load (internal / modules / cjs / loader.js: 530: 3)
on Function.Module.runMain (internal / modules / cjs / loader.js: 742: 12)
at startup (internal / bootstrap / node.js: 282: 19)
on bootstrapNodeJSCore (internal / bootstrap / node.js: 743: 3)

node.js – Run a python script on a node server?

My youngest brother has created a little rock game, scissors and python paper running under console.
I wish to host it on my own domain, under a digitalOcean droplet. I do not have more experience with python than to know the syntax and use cases.

I guess it's almost impossible to run python code in the browser. I guess I have to configure a server. However, since I do not know python, I will not go into learning the django or the bottle for the sake of knowing it.

Can I create a java backend or, better yet, an express runtime server that can somehow communicate with the python script? If so, how should this be done in the simplest way?

android – nodeJs Firebase onCall, query, createCustomToken returns async token

I am an Android developer and I am trying to use nodeJs on the backend to validate an AccountKit token, then create a custom token. But I fight with the knot js.

I first call my https.onCall method, method from Android

private task getCustomToken (String accessToken) {
Returns FirebaseFunctions.getInstance (). getHttpsCallable ("getCustomToken-getCustomToken")
.call (accessToken)
.continueWith (new suite() {
@Override
public channel then (@NonNull Task) task) throws Exception {

// This continuation runs in case of success or failure, but if the task
// failed, then getResult () throws an exception that will
// spread down.

String Result = (String) task.getResult (). GetData ();
return the result;
}
});
}

Then on nodeJs:

exports.getCustomToken = functions.https.onCall ((data, context)) => {
console.log ("launch");
const accessToken = data;
console.log ("accessToken =" + accessToken);

// validate the access token to the Facebook account kit
// https://developers.facebook.com/docs/accountkit/graphapi
// console.log ("https://graph.accountkit.com/v1.3/me/?access_token=" + accessToken + "& appsecret_proof =" + appSecretProof);

var url = "https://graph.accountkit.com/v1.3/me/?access_token=" + accessToken;
console.log (url);

request({
url: url,
json: true
}, (error, fbResponse, data) => {
if (error)
{
console.error (& # 39; Request for validation of the access token failed  n & # 39 ;, error);
console.log (error)
}
if not (data.error)
{
console.log (data.error);
}
other
{
returns admin.auth (). createCustomToken (data.id)
.then (function (customToken)
{
console.log (customToken);
return {access_token: customToken};
})
.catch (function (error)
{
console.log ("Error", error);
});
}
});

Does not work Because functions come back before the request is made as I understand it.
So, I looked around, and apparently I should use a reminder. But I do not understand how to achieve it. Should I make two reminders?
One for the request, one when calling firebase.createCustomToken?

Help appreciated thanks!