Seite 1
<html>
<head><title></title></head>
<body>
<form action="seite2.html" method="GET">
<input id="one" name="one" size="30" />
<input type="submit" />
</form>
</body>
</html>
Seite 2
<html>
<head><title></title>
<script>
const urlParams = new URLSearchParams(window.location.search);
alert( urlParams.get('one'));
</script>
</head>
<body>
<p>Test</p>
</body>
</html>