Chart React Js Random Background Color

<!DOCTYPE html>
<html>

<body>
  <div id="app"></div>
  <script type="text/babel">
    const { useRef,useEffect } = React;

function App() {
     const chartRef = useRef(null);

useEffect(() => {
        const generateRandomColor = () => {
          const randomColor = Math.floor(Math.random() * 16777215).toString(16);
          return `#${randomColor}`;
        };

const generateRandomColors = (count) => {
          return Array.from({ length: count }, () => generateRandomColor());
        };

const companies = [
          { name: 'Amazon', valuation: 1900 },
          { name: 'Tesla', valuation: 800 },
          { name: 'Alphabet', valuation: 1500 },
          { name: 'Meta Platforms', valuation: 900 },
          { name: 'Walmart', valuation: 400 },
          { name: 'Intel', valuation: 250 },
          { name: 'NVIDIA', valuation: 500 },
          { name: 'Netflix', valuation: 300 },
          { name: 'Salesforce', valuation: 250 },
          { name: 'Oracle', valuation: 350 },
          { name: 'Adobe', valuation: 250 },
          { name: 'IBM', valuation: 150 },
          { name: 'Cisco', valuation: 200 },
          { name: 'Sony', valuation: 100 },
          { name: 'Samsung', valuation: 350 },
          { name: 'General Electric', valuation: 100 }
        ];

const ctx = chartRef.current.getContext('2d');
        const randomColors = generateRandomColors(companies.length);

new Chart(ctx, {
          type: 'bar',
          data: {
            labels: companies.map(company => company.name),
            datasets: [{
              label: 'Company Valuation',
              data: companies.map(company => company.valuation),
              backgroundColor: randomColors,
            }],
          },
        });
      }, []);

return (
        <div className='container'>
          <h3>Chart React Random Background Color</h3>
          <canvas id="random-background-color-chart" ref={chartRef}></canvas>
        </div>
      );
    }

ReactDOM.render(<App />, document.getElementById("app"));
  </script>
  <style>
    .container {
      max-width: 500px;
      margin: 0 auto;
      padding: 20px;
      border-radius: 8px;
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
    }
  </style>
</body>

</html>

 
<!DOCTYPE html>
<html>
​
<head>
  <meta charset="UTF-8" />
  <script src="https://cdnjs.cloudflare.com/ajax/libs/react/17.0.2/umd/react.development.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/17.0.2/umd/react-dom.development.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/babel-standalone/6.26.0/babel.min.js"></script>
  <script src="https://cdn.jsdelivr.net/npm/chart.js@2.9.4"></script>
</head>
​
<body>
  <div id="app"></div>
  <script type="text/babel">
    const { useRef,useEffect } = React;
​
    function App() {
     const chartRef = useRef(null);
​
      useEffect(() => {
        const generateRandomColor = () => {
          const randomColor = Math.floor(Math.random() * 16777215).toString(16);
          return `#${randomColor}`;
        };
​
        const generateRandomColors = (count) => {
          return Array.from({ length: count }, () => generateRandomColor());
        };
​
        const companies = [
          { name: 'Amazon', valuation: 1900 },
          { name: 'Tesla', valuation: 800 },
          { name: 'Alphabet', valuation: 1500 },
          { name: 'Meta Platforms', valuation: 900 },
          { name: 'Walmart', valuation: 400 },
          { name: 'Intel', valuation: 250 },
          { name: 'NVIDIA', valuation: 500 },
          { name: 'Netflix', valuation: 300 },
          { name: 'Salesforce', valuation: 250 },
          { name: 'Oracle', valuation: 350 },
          { name: 'Adobe', valuation: 250 },
          { name: 'IBM', valuation: 150 },
          { name: 'Cisco', valuation: 200 },
          { name: 'Sony', valuation: 100 },
          { name: 'Samsung', valuation: 350 },
          { name: 'General Electric', valuation: 100 }
        ];
​
​
        const ctx = chartRef.current.getContext('2d');
        const randomColors = generateRandomColors(companies.length);
​
        new Chart(ctx, {
          type: 'bar',
          data: {
            labels: companies.map(company => company.name),
            datasets: [{
              label: 'Company Valuation',
              data: companies.map(company => company.valuation),
              backgroundColor: randomColors,
            }],
          },
        });
      }, []);
​
      return (
        <div className='container'>
          <h3>Chart React Random Background Color</h3>
          <canvas id="random-background-color-chart" ref={chartRef}></canvas>
        </div>
      );
    }
​
    ReactDOM.render(<App />, document.getElementById("app"));
  </script>
  <style>
    .container {
      max-width: 500px;
      margin: 0 auto;
      padding: 20px;
      border-radius: 8px;
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
    }
  </style>
</body>
​
</html>