React Js Format Number Example

<!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>
  </head>

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

function App() {
        const [macAddress, setMacAddress] = useState("001122334455");
        const [formattedMacAddress, setFormattedMacAddress] = useState("");

const formatMacAddress = () => {
          const cleanedMacAddress = macAddress.replace(/[^a-zA-Z0-9]/g, "");
          const macGroups = cleanedMacAddress.match(/.{1,2}/g);
          const formattedMacAddress = macGroups.join(":");
          setFormattedMacAddress(formattedMacAddress);
        };

return (
          <div className="container">
            <h3>React Js Formatted MAC Address</h3>
            <input
              type="text"
              value={macAddress}
              onChange={(e) => setMacAddress(e.target.value)}
            />
            <button onClick={formatMacAddress}>Format MAC Address</button>
            {formattedMacAddress && (
              <p>Formatted MAC Address: {formattedMacAddress}</p>
            )}
          </div>
        );
      }
      ReactDOM.render(<App />, document.getElementById("app"));
    </script>