HTML -Nummer Eingabe mit Kommas

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>innerHTML</title>
</head>
<body>
    
<h1>Exaple, "<span id="txt"></span>"</h1>

<input type="text" id="input">

<button onclick="    document.getElementById('txt').innerHTML = yourInput.value;">click me to change</button>

<script>

    let yourInput = document.getElementById('input');
    //this will get your wanted element and asing its value to let variable 

</script>
</body>
</html>
Cooperative Capuchin