React Disable Button if Input Empty

<!DOCTYPE html>
<html>

</head>

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

function App() {
      const [formValues, setFormValues] = useState({
        field1: '',
        field2: '',
        nonRequiredField: '',
      });

// Check if any of the required fields are empty
      const isSubmitDisabled = !(formValues.field1 && formValues.field2);

const handleInputChange = (event) => {
        const { name, value } = event.target;
        setFormValues({
          ...formValues,
          [name]: value,
        });
      };

const handleSubmit = (event) => {
        event.preventDefault();
        // Handle form submission logic here
      };

return (
        <div className='container'>
          <h3>React Js Disable submit Button if required fields are Empty </h3>
          <form onSubmit={handleSubmit}>
            <label>
              Field 1 (Required):
              <input
                type="text"
                name="field1"
                value={formValues.field1}
                onChange={handleInputChange}
                required
              />
            </label>
            <label>
              Field 2 (Required):
              <input
                type="text"
                name="field2"
                value={formValues.field2}
                onChange={handleInputChange}
                required
              />
            </label>
            <label>
              Non-Required Field:
              <input
                type="text"
                name="nonRequiredField"
                value={formValues.nonRequiredField}
                onChange={handleInputChange}
              />
            </label>
            {/* Add more input fields for other required or non-required fields if needed */}
            <button type="submit" disabled={isSubmitDisabled}>
              Submit
            </button>
          </form>
        </div>

);
    }

ReactDOM.render(<App />, document.getElementById('app'));
  </script>
  <style>
    /* Container */
    .container {
      font-family: Arial, sans-serif;
      max-width: 800px;
      margin: 0 auto;
      padding: 20px;
      border-radius: 8px;
      box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
      text-align: center;
    }

form {
      display: flex;
      flex-direction: column;
    }

label {
      margin-bottom: 10px;
      font-weight: bold;
    }

input[type="text"] {
      padding: 10px;
      border: 1px solid #ccc;
      border-radius: 3px;
      margin-top: 5px;
      font-size: 16px;
    }

button[type="submit"] {
      background-color: #007BFF;
      color: #fff;
      border: none;
      border-radius: 3px;
      padding: 10px 15px;
      font-size: 16px;
      cursor: pointer;
      transition: background-color 0.3s;
    }

/* Disable button */
    button[type="submit"]:disabled {
      background-color: #ccc;
      /* Change this to your desired disabled button color */
      cursor: not-allowed;
    }

button[type="submit"]:hover {
      background-color: #0056b3;
    }

/* You can add more custom styles as needed */

/* Style the required field indicator */
    input:required::after {
      content: '*';
      color: red;
      margin-left: 5px;
    }

/* Style error messages */
    input:invalid {
      border-color: red;
    }

/* Style the form when it's in an error state */
    form:invalid {
      border-color: red;
    }
  </style>
</body>

</html>