Sencha Ext JS is a feature-rich JavaScript framework for building business-grade web applications. By integrating Marketstack API, you can create a real-time Javascript stock charts application easily. That’s how you build a real-time stock market web application utilizing Marketstack API. You can use the same codes to display real-time stock market data in your cross-platform application using Sencha Ext JS.
Visit: https://www.sencha.com/blog/easily-build-real-time-stock-market-charts-using-javascript/