Currently working on a stock project for my portfolio and I am using finnhub as the API. I can log everything to my console. However I cannot render it as the "data" is not globally declared and must be inside of a certain function.
I tried rendering globally but had no luck...
So my question is how do I make 'data' global so that I can render it inside of the "StockHeader's" return ?
Heres what I have so far...
import React,{ useState, useEffect } from 'react';
const StockHeader = (data) => {
const [stocks, setStocks] = useState({});
const getStocks = () => {
//setting stocks
setStocks(stocks)
}
//calling it once
useEffect(()=> {
getStocks();
}, [])
//using finhubs ready made code from documentation
const finnhub = require('finnhub');
const api_key = finnhub.ApiClient.instance.authentications['api_key'];
api_key.apiKey = "my apikey"
const finnhubClient = new finnhub.DefaultApi()
finnhubClient.quote("AAPL", (error, data, response) => {
//I can log the data but I cant show it in my component
console.log(data.c)
});
return (
<>
{/* This says that data is not defined */}
<h1>{data.c}</h1>
</>
)
}
export default StockHeader
You just need a little bit of code reorganization so that the API request only happens once and so that you can use setStocks to store it:
const StockHeader = (data) => {
const [stocks, setStocks] = useState({});
useEffect(()=> {
//this could be separated into a `getStocks` function if you want
const finnhub = require('finnhub');
const api_key = finnhub.ApiClient.instance.authentications['api_key'];
api_key.apiKey = "my apikey"
const finnhubClient = new finnhub.DefaultApi()
finnhubClient.quote("AAPL", (error, data, response) => {
console.log(data.c);
setStocks(data.c);
});
}, []);
return (
<>
{/* You probably don't want to render `stocks` itself, but this shows you how to get access to the variable */}
<h1>{stocks}</h1>
</>
)
}