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 formatSSN = (ssn) => {
          const regex = /^(.{3})(.{2})(.{4})$/;
          return ssn.replace(regex, "$1-$2-$3");
        };

const ssn = "123456789"; // Replace with the actual Social Security number

return (
          <div className="container">
            <h3>React Js Format Number - SSN</h3>
            <p>SSN: {ssn}</p>
            <p>Format Number : {formatSSN(ssn)}</p>
          </div>
        );
      }
      ReactDOM.render(<App />, document.getElementById("app"));
    </script>