create tradingview screen in javascript

To create a TradingView screen using JavaScript, you will need to use the TradingView Charting Library. This library provides access to a wide range of financial data and a powerful user interface for creating custom charts and graphs.

To get started, you will need to create an HTML page with an embedded TradingView chart. You can do this by including the following code in your HTML:


<!DOCTYPE html>
<html>
  <head>
    <script src="https://unpkg.com/lightweight-charts@3.2.0/dist/lightweight-charts.standalone.production.min.js"></script>
  </head>
  <body>
    <div id="chart"></div>
    <script>
      var chart = LightweightCharts.createChart(document.getElementById('chart'), {});
    </script>
  </body>
</html>
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This creates a basic TradingView charting screen with an empty chart. To add data to the chart, you will need to create a data feed and stream data into the chart using the library's API.

For example, you can use the following code to create a data feed and add some historical price data:


index.tsx
var dataFeed = new Datafeeds.UDFCompatibleDatafeed("https://demo_feed.tradingview.com");
chart.applyOptions({
    layout: {
        backgroundColor: '#F5F5F5',
        textColor: '#696969',
    },
    grid: {
        vertLines: {
            color: 'rgba(197, 203, 206, 0.5)',
        },
        horzLines: {
            color: 'rgba(197, 203, 206, 0.5)',
        },
    },
    crosshair: {
        mode: LightweightCharts.CrosshairMode.Normal,
    },
    rightPriceScale: {
        borderColor: '#97B5D3',
    },
    timeScale: {
        borderColor: '#97B5D3',
    },
});
var chart = LightweightCharts.createChart(document.getElementById('chart'), {
    width: 600,
    height: 300,
});
chart.applyOptions({
    timeScale: {
        timeVisible: true,
        secondsVisible: false,
    },
});
var symbol = "AAPL";
var interval = "1D";
dataFeed.getBars(symbolInfo, resolution, from, to, onDataCallback, onErrorCallback);
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This code creates a data feed object and sets up chart options such as background color, crosshair mode, and time scale. It then creates a chart with a specified width and height and sets the time scale options to show visible time scale. Finally, it requests the price data from the data feed and stream it into the chart using the onDataCallback function.

With these basic components, you can add additional features such as chart overlays and studies, technical analysis tools, and custom user interfaces to create a fully functional TradingView screen using JavaScript.

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