React Js Add item from array to another array where is same id

<!DOCTYPE html>
<html>

</head>

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

const App = () => {
      // Sample arrays with data
      const [array1, setArray1] = useState([
        { id: 1, name: 'Item 1' },
        { id: 2, name: 'Item 2' },
      ]);

const [array2, setArray2] = useState([
        { id: 1, description: 'Description 1' },
        { id: 3, description: 'Description 3' },
      ]);

// Function to add items from array2 to array1 based on matching IDs
      const mergeArrays = () => {
        const mergedArray = array1.map((item1) => {
          const matchingItem = array2.find((item2) => item2.id === item1.id);

// If a matching item is found in array2, merge them
          if (matchingItem) {
            return {
              ...item1,
              ...matchingItem,
            };
          }

// If no matching item is found, return the original item from array1
          return item1;
        });

// Update state with the merged array
        setArray1(mergedArray);
      };

return (
        <div className='container'>
          <h3>React Js Add item from array to another array where is same id</h3>
          <button onClick={mergeArrays}>Merge Arrays</button>
          <p>  {JSON.stringify(array1)}</p>
        </div>
      );
    }

ReactDOM.render(<App />, document.getElementById('app'));
  </script>
  <style>
    .container {
      border-radius: 8px;
      box-shadow: 0px 2px 4px rgba(0, 0, 0, 0.1);
      padding: 20px;
      margin: 20px auto;
      max-width: 400px;
      text-align: 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>
​
</head>
​
<body>
  <div id="app"></div>
  <script type="text/babel">
    const { useState } = React;
​
    const App = () => {
      // Sample arrays with data
      const [array1, setArray1] = useState([
        { id: 1, name: 'Item 1' },
        { id: 2, name: 'Item 2' },
      ]);
​
      const [array2, setArray2] = useState([
        { id: 1, description: 'Description 1' },
        { id: 3, description: 'Description 3' },
      ]);
​
      // Function to add items from array2 to array1 based on matching IDs
      const mergeArrays = () => {
        const mergedArray = array1.map((item1) => {
          const matchingItem = array2.find((item2) => item2.id === item1.id);
​
          // If a matching item is found in array2, merge them
          if (matchingItem) {
            return {
              ...item1,
              ...matchingItem,
            };
          }
​
          // If no matching item is found, return the original item from array1
          return item1;
        });
​
        // Update state with the merged array
        setArray1(mergedArray);
      };
​
      return (
        <div className='container'>
          <h3>React Js Add item from array to another array where is same id</h3>
          <button onClick={mergeArrays}>Merge Arrays</button>
          <p>  {JSON.stringify(array1)}</p>
        </div>
      );
    }
​
    ReactDOM.render(<App />, document.getElementById('app'));
  </script>
  <style>
    .container {
      border-radius: 8px;
      box-shadow: 0px 2px 4px rgba(0, 0, 0, 0.1);
      padding: 20px;
      margin: 20px auto;
      max-width: 400px;
      text-align: center;
    }
  </style>
</body>
​
</html>