javascript如何获取到实时股票数据后实现数据分析和计算

javascript要构建实时股票行情分析应用程序，首先需要获取股票行情数据。目前有很多金融数据提供商提供免费或付费的股票行情数据接口。

获取实时股票数据​

const apiKey = "YOUR_API_KEY";
const symbol = "AAPL"; // 股票代码
 
fetch(`https://www.alphavantage.co/query?function=TIME_SERIES_INTRADAY&symbol=${symbol}&interval=1min&apikey=${apiKey}`)
  .then(response => response.json())
  .then(data => {
    console.log(data); // 输出获取到的股票数据
  })
  .catch(error => {
    console.error(error);
  });

分析股票行情数据

function calculateMovingAverage(data, period) {
  const closePrices = Object.values(data["Time Series (1min)"]).map(entry => parseFloat(entry["4. close"]));
  const movingAverages = [];
   
  for (let i = 0; i <= closePrices.length - period; i++) { const average = closePrices.slice(i, i + period).reduce((sum, price) => sum + price) / period;
    movingAverages.push(average);
  }
  
  return movingAverages;
}
 
// 假设我们有获取到的股票数据存储在变量data中
const movingAverages = calculateMovingAverage(data, 5); // 计算5日移动平均线
console.log(movingAverages);