React Js Convert Date to Unix Timestamp

<!DOCTYPE html>
<html>

return (
        <div className='container'>
          <h3>React Js Convert Date to Unix Timestamp </h3>
          <input
            type="date"
            value={inputDate}
            onChange={(e) => setInputDate(e.target.value)}
            className="date-input"
          />
          <button onClick={convertToTimestamp} className="timestamp-button">
            Convert to Unix Timestamp
          </button>
          <div className="timestamp-result">
            {unixTimestamp !== null ? (
              <p>Unix Timestamp: {unixTimestamp}</p>
            ) : (
              <p>Invalid Date</p>
            )}
          </div>
        </div>

);
    }
    ReactDOM.render(<App />, document.getElementById("app"));
  </script>

/* Style the input field */
    .date-input {
      padding: 10px;
      margin: 10px;
      border: 2px solid #ccc;
      border-radius: 5px;
      font-size: 16px;
      width: 80%;
    }

/* Style the timestamp button */
    .timestamp-button {
      padding: 10px 20px;
      background-color: #007bff;
      color: #fff;
      border: none;
      border-radius: 5px;
      font-size: 16px;
      cursor: pointer;
      transition: background-color 0.3s;
    }

.timestamp-button:hover {
      background-color: #0056b3;
    }

/* Style the timestamp result container */
    .timestamp-result {
      margin: 20px 0;
    }

/* Style the timestamp result text */
    .timestamp-result p {
      font-size: 18px;
      font-weight: bold;
    }

/* Style the "Invalid Date" message */
    .timestamp-result p:last-child {
      color: #ff0000;
      font-weight: normal;
    }

/* Style the "Unix Timestamp" text */
    .timestamp-result p:first-child {
      color: #4caf50;
    }
  </style>
</body>

</html>

 
<!DOCTYPE html>
<html>
​
<head>
  <meta charset="UTF-8" />
  <script src="https://unpkg.com/react@17.0.2/umd/react.development.js"></script>
  <script src="https://unpkg.com/react-dom@17.0.2/umd/react-dom.development.js"></script>
  <script src="https://unpkg.com/@babel/standalone@7.14.7/babel.min.js"></script>
  <script src="https://unpkg.com/axios/dist/axios.min.js"></script>
</head>
​
<body>
  <div id="app"></div>
​
​
  <script type="text/babel">
    const { useState, useEffect } = React;
    function App() {
      const [inputDate, setInputDate] = useState('');
      const [unixTimestamp, setUnixTimestamp] = useState(null);
​
      const convertToTimestamp = () => {
        const inputDateObj = new Date(inputDate);
        if (!isNaN(inputDateObj)) {
          const unixTimestamp = inputDateObj.getTime() / 1000;
          setUnixTimestamp(unixTimestamp);
        } else {
          setUnixTimestamp(null);
        }
      };
​
      return (
        <div className='container'>
          <h3>React Js Convert Date to Unix Timestamp </h3>
          <input
            type="date"
            value={inputDate}
            onChange={(e) => setInputDate(e.target.value)}
            className="date-input"
          />
          <button onClick={convertToTimestamp} className="timestamp-button">
            Convert to Unix Timestamp
          </button>
          <div className="timestamp-result">
            {unixTimestamp !== null ? (
              <p>Unix Timestamp: {unixTimestamp}</p>
            ) : (
              <p>Invalid Date</p>
            )}
          </div>
        </div>
​
      );
    }
    ReactDOM.render(<App />, document.getElementById("app"));
  </script>
​
​
  <style>
    .container {
      font-family: Arial, sans-serif;
      padding: 20px;
      border-radius: 5px;
      box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.2);
      max-width: 600px;
      margin: 0 auto;
      text-align: center;
    }
​
​
​
​
    /* Style the input field */
    .date-input {
      padding: 10px;
      margin: 10px;
      border: 2px solid #ccc;
      border-radius: 5px;
      font-size: 16px;
      width: 80%;
    }
​
    /* Style the timestamp button */
    .timestamp-button {
      padding: 10px 20px;
      background-color: #007bff;
      color: #fff;
      border: none;
      border-radius: 5px;
      font-size: 16px;
      cursor: pointer;
      transition: background-color 0.3s;
    }
​
    .timestamp-button:hover {
      background-color: #0056b3;
    }
​
    /* Style the timestamp result container */
    .timestamp-result {
      margin: 20px 0;
    }
​
    /* Style the timestamp result text */
    .timestamp-result p {
      font-size: 18px;
      font-weight: bold;
    }
​
    /* Style the "Invalid Date" message */
    .timestamp-result p:last-child {
      color: #ff0000;
      font-weight: normal;
    }
​
    /* Style the "Unix Timestamp" text */
    .timestamp-result p:first-child {
      color: #4caf50;
    }
  </style>
</body>
​
</html>