This is an example what i need to do.
$(document).ready(function() {
var inputvalue = "field 1";
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.7.1/jquery.min.js"></script>
<div><input value="<!-- inputvalue here -->"></div>
$(document).ready(function() {
var inputvalue="field 1";
$('#id1').val(inputvalue);
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.7.1/jquery.min.js"></script>
<html>
<body>
<div><input id="id1" value=""></div>
</body>
</html>