Apologies, but as a beginner developer, I'm struggling to see how this relates directly to the questions already mentioned. I have no understanding of ajax and I'm unsure how to adapt the solutions provided to my own situation.
Currently, I'm working on a simple node application that retrieves stock prices from one web API, fetches currency conversion rates from another API, and then converts the stock price from USD to AUD. Initially, everything worked perfectly when all the code was in a single file. However, in an effort to simplify things, I decided to divide it into multiple modules and now I seem to have broken it :)
Essentially, I pass the desired ticker symbol into my GetStockPrice() function, which then executes the necessary query and returns the result... in theory.
This is how I call my module:
var returned = GetStockPrice('AMZN');
console.log(returned);
Unfortunately, the returned value always remains 10 because it's not being updated within my GetStockPrice module.
Here's the code within my module:
var http = require('http');
var stockPrice = 10;
function GetStockPrice(ticker) {
var options = {
host: 'dev.markitondemand.com',
port: 80,
path: '/MODApis/Api/v2/Quote/json?symbol=' + ticker,
method: 'GET'
};
http.request(options, function(res) {
console.log('STATUS: ' + res.statusCode);
res.setEncoding('utf8');
res.on('data', function(chunk) {
const json = JSON.parse(chunk);
stockPrice = json.LastPrice;
});
}).end();
return (stockPrice)
};
module.exports = GetStockPrice;
My understanding is that the issue lies with the asynchronous nature of http.request. By the time my function reaches the return statement, the async call hasn't completed yet, so the return value (stockPrice) remains the same as when it was initially initialized. Unfortunately, I'm unsure how to resolve this. I attempted to move the return statement inside the http.request function, but that didn't yield any successful results either.
If anyone has any guidance or assistance, I would greatly appreciate it!