React Js Convert Image to Base64 Encoded Binary

<!DOCTYPE html>
<html>
<head>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/babel-standalone/6.26.0/babel.min.js"></script>
</head>
<body>
  <div id="app"></div>
  <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 type="text/babel">
    const { useState } = React;

function App() {
      const [imageData, setImageData] = useState({
        base64textString: '',
        imageName: '',
        showImage: false,
      });

const convertToBase64 = (event) => {
        const file = event.target.files[0];

const reader = new FileReader();
        reader.readAsDataURL(file);

reader.onload = () => {
          setImageData({
            base64textString: reader.result,
            imageName: file.name,
            showImage: true,
          });
        };

reader.onerror = (error) => {
          console.log('Error: ', error);
        };
      };

return (
        <div className='container'>
          <h3>React Convert Image to Base64</h3>
          <input type="file" onChange={convertToBase64} accept="image/*" />
          <br />
          {imageData.showImage && (
            <div>
              <img src={imageData.base64textString} alt={imageData.imageName} />
            </div>
          )}
          <br />
          <textarea
            value={imageData.base64textString}
            onChange={(e) =>
              setImageData({
                ...imageData,
                base64textString: e.target.value,
              })
            }
            rows="5"
          ></textarea>
        </div>
      );
    }

ReactDOM.render(<App />, document.getElementById('app'));
  </script>
  <style scoped>
    .container {
      max-width: 600px;
      margin: 0 auto;
      padding: 20px;

border-radius: 5px;
      box-shadow: 0px 0px 10px 0px rgba(0, 0, 0, 0.2);
    }

h3 {
      text-align: center;
      margin-top: 0;
    }

input[type="file"] {
      margin-bottom: 10px;
    }

textarea {
      width: 100%;
      padding: 10px;
      font-size: 16px;
      border: 1px solid #ccc;
      border-radius: 5px;
      resize: none;
      box-sizing: border-box;
    }

img {
      max-width: 100%;
      height: auto;
    }
  </style>
</body>

</html>

 
<!DOCTYPE html>
<html>
<head>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/babel-standalone/6.26.0/babel.min.js"></script>
</head>
<body>
  <div id="app"></div>
  <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 type="text/babel">
    const { useState } = React;
​
    function App() {
      const [imageData, setImageData] = useState({
        base64textString: '',
        imageName: '',
        showImage: false,
      });
​
      const convertToBase64 = (event) => {
        const file = event.target.files[0];
​
        const reader = new FileReader();
        reader.readAsDataURL(file);
​
        reader.onload = () => {
          setImageData({
            base64textString: reader.result,
            imageName: file.name,
            showImage: true,
          });
        };
​
        reader.onerror = (error) => {
          console.log('Error: ', error);
        };
      };
​
      return (
        <div className='container'>
          <h3>React Convert Image to Base64</h3>
          <input type="file" onChange={convertToBase64} accept="image/*" />
          <br />
          {imageData.showImage && (
            <div>
              <img src={imageData.base64textString} alt={imageData.imageName} />
            </div>
          )}
          <br />
          <textarea
            value={imageData.base64textString}
            onChange={(e) =>
              setImageData({
                ...imageData,
                base64textString: e.target.value,
              })
            }
            rows="5"
          ></textarea>
        </div>
      );
    }
​
    ReactDOM.render(<App />, document.getElementById('app'));
  </script>
  <style scoped>
    .container {
      max-width: 600px;
      margin: 0 auto;
      padding: 20px;
​
      border-radius: 5px;
      box-shadow: 0px 0px 10px 0px rgba(0, 0, 0, 0.2);
    }
​
    h3 {
      text-align: center;
      margin-top: 0;
    }
​
    input[type="file"] {
      margin-bottom: 10px;
    }
​
    textarea {
      width: 100%;
      padding: 10px;
      font-size: 16px;
      border: 1px solid #ccc;
      border-radius: 5px;
      resize: none;
      box-sizing: border-box;
    }
​
    img {
      max-width: 100%;
      height: auto;
    }
  </style>
</body>
​
</html>