如何在 React 组件中使用 TradingView 小部件？

Question

此小部件与 SO 上的其他示例略有不同。其他示例只有一个带有 url src 的脚本标签，但这个小部件有另一个带有函数的脚本标签。

这是我从他们的网站上复制的。 Tradingview widgets

<!-- TradingView Widget BEGIN -->
<div class="tradingview-widget-container">
  <div id="tradingview_ca190"></div>
  <div class="tradingview-widget-copyright"><a href="https://www.tradingview.com/symbols/NASDAQ-AAPL/" rel="noopener" target="_blank"><span class="blue-text">AAPL Chart</span></a> by TradingView</div>
  <script type="text/javascript" src="https://s3.tradingview.com/tv.js"></script>
  <script type="text/javascript">
  new TradingView.widget(
  {
  "width": 980,
  "height": 610,
  "symbol": "NASDAQ:AAPL",
  "interval": "D",
  "timezone": "Etc/UTC",
  "theme": "dark",
  "style": "1",
  "locale": "en",
  "toolbar_bg": "#f1f3f6",
  "enable_publishing": false,
  "allow_symbol_change": true,
  "container_id": "tradingview_ca190"
}
  );
  </script>
</div>
<!-- TradingView Widget END -->

Answer 1

此解决方案有效，但每次符号更改时都会重新渲染小部件。如果您更改小部件本身的符号，则只会呈现价格图表和交易量图表。

import React, { useState, useEffect } from "react";
import { Helmet } from 'react-helmet';


const DrawChart = ({ symbol='AAPL' }) => {

const useScript = url => {
    useEffect(() => {
      const script = document.createElement('script');
  
      script.src = url;
      script.async = true;
  
      document.body.appendChild(script);
  
      return () => {
        document.body.removeChild(script);
      }
    }, [url]);
};


return (
    <div className="tradingview-widget-container">
    {useScript('https://s3.tradingview.com/tv.js')}
    <div id="tradingview_2d7e4"></div>
    <div className="tradingview-widget-copyright">
        <a href="https://www.tradingview.com/symbols/NASDAQ-AAPL/" rel="noopener" target="_blank"></a>
    </div>
    <Helmet>
        <script type="text/javascript">{`
            new window.TradingView.widget({
                "width": 400,
                "height": 400,
                "symbol": \`${symbol}\`,
                "interval": "D",
                "timezone": "Etc/UTC",
                "theme": "dark",
                "style": "1",
                "locale": "en",
                "toolbar_bg": "#f1f3f6",
                "enable_publishing": false,
                "allow_symbol_change": true,
                "container_id": "tradingview_2d7e4"
            })
        `}
        </script>
    </Helmet>
    </div>
)
}

export default DrawChart;