#MQL5-Connector-Js

MQL5-connector-js is an interface between MT5 and nodeJS. All of the functionality of MT5 can be use on nodejs using ZeroMq. This library is created with javascript asynchronous technology. So, you have to use async await keywords to retrieve data from MT5.

1.First of all go to this link to install mql5-connector on MT5 and follow the github installation guides. 2.Install python 2.7 on your windows or linux machine. Or if you having trouble to install zeromq.js then follow the github guide to install zeromq.js 3.Install mql5-connector-js using npm

npm install mql5-connector-js

First you have to initialize mql5-connector-js.

const { ConfigContext } = require("mql5-connector-js");
// default config
new ConfigContext().init();

// or you can change as your needs
// input this config to mql5-connector on MT5
new ConfigContext({
  host_ip: "127.0.0.1", // server ip
  protocol: "tcp", // transfer protocol
  port1: 3033, // push socket port
  port2: 3034, // pull socket port
  port3: 3035, // publisher socket port
  timeout_ms: 1000 // wait for messages from server until timeout
}).init();

AccountInfo class have the functions of Mql5 Account properties

const { ConfigContext, AccountInfo } = require("mql5-connector-js");
// config context
new ConfigContext().init();

//first init default or custom socket config as avobe
AccountInfo.loginId().then(loginId =>
  console.log("Account Login Id : " + loginId)
);
// or
let loginId = await AccountInfo.loginId();
console.log("Account Login Id : " + loginId);

// explore AccountInfo for more functions

SymbolInfo class have functions of Mql5 Symbol properties

const { ConfigContext, SymbolInfo } = require("mql5-connector-js");
// config context
new ConfigContext().init();

SymbolInfo.digits("EURUSD").then(digits =>
  console.log("EURUSD digits : " + digits)
);
//or
let digits = await SymbolInfo.digits("EURUSD");
console.log("EURUSD digits : " + digits);

// explore SymbolInfo for more functions

Placing a buy trade on EURUSD

const { ConfigContext, Trade } = require("mql5-connector-js");
// default config context
new ConfigContext().init();
// you can change the model anytime if you want
// or you can build multiple model to perform same task
let buy_model = new Trade()
  .magic(123734234)
  .slippage(10)
  .lotSize(0.01)
  .symbol("EURUSD")
  // you can define your price
  .price(1.102)
  // or you can call latest price. Then this will get the
  // latest price from market and place a buy trade
  .latestPrice() // only for buy and sell trade
  // you can define your custom price
  .takeProfitPrice(1.103) // 10 pips from defined price
  // you can define it with pips
  .takeProfit(10) // 10 pips from current price
  .stopLoss(10) // as same as take profit
  .comment("Placing a buy trade using declared price");
let ticket = await buy_model.buy(); // returns order ticket
console.log("Ticket : " + ticket);
// sometimes it fails to retrieve order ticket. so, handle it your owns

Placing a buy stop order on AUDUSD

const { ConfigContext, Trade } = require("mql5-connector-js");
// default config context
new ConfigContext().init();

// you can build a model for placing stop or limit order for future works
let buy_stop_model = new Trade()
  .magic(123734234)
  .slippage(10)
  .lotSize(0.01)
  .symbol("AUDUSD")
  .price(0.675)
  .takeProfit(10)
  .stopLoss(10)
  .comment("placing a buy stop order");
let ticket = await buy_stop_model.buyStop(); // returns order ticket
console.log("Ticket : " + ticket);
// sometimes it fails to retrieve order ticket. so, handle it your owns

There are two types of event 1. onBar event (which called after a new bar has formed) 2. onTick event (which called after a new tick has found)

example of onBar event for EURUSD with 1H timeframe & 100 history bars

// import types
const { ConfigContext, Event, Timeframe, Bar } = require("mql5-connector-js");
// default config context
new ConfigContext().init();

let bar_event = new Event()
  .selectSymbol("EURUSD")
  .timeframe(Timeframe.H1)
  .historyBarCount(100)
  .onBar(bars => {
    // bars : Bars[]
    console.log("bars : " + bars);
  });

bar_event.unsubscribeOnBarEvent(); // unsubsribe it when not necessary

example of onTick event for USDJPY with 100 history ticks

// import types
const { ConfigContext, Event, Tick } = require("mql5-connector-js");
// default config context
new ConfigContext().init();

let tick_event = new Event()
  .selectSymbol("USDJPY")
  .historyTickCount(100)
  .onTick(ticks => {
    // ticks : Tick[]
    console.log("Ticks : " + ticks);
  });

tick_event.unsubscribeOnTickEvent(); // unsubsribe when not necessary

You can get history data using Event. example of retrieving EURUSD 1H history bars from MT5

const { ConfigContext, Event, Timeframe, Bar } = require("mql5-connector-js");
// default config context
new ConfigContext().init();

let bars = await new Event()
  .selectSymbol("EURUSD")
  .timeframe(Timeframe.H1)
  .fromDate(new Date("2010-01-01 00:00:00"))
  .toDate(new Date())
  .getBars();

console.log(bars[0]);