I would like form to have some elements pre filled with data already filled out on a previous page.
I have tried adding this to the page

<script text="text/javascript">

var getUrlParameter = function getUrlParameter(sParam) {
    var sPageURL = decodeURIComponent(window.location.search.substring(1)),
        sURLVariables = sPageURL.split('&'),
        sParameterName,
        i;
    for (i = 0; i < sURLVariables.length; i++) {
        sParameterName = sURLVariables[i].split('=');
        if (sParameterName[0] === sParam) {
            return sParameterName[1] === undefined ? true : sParameterName[1];
        }
    }
};

var movetype = getUrlParameter('type');

document.getElementsByClassName('Movingtype').value = movetype;
console.log("testing5 "+movetype);
</script>

and I get the log but the select box isn’t pre-filled

I have also tried
https://wordpress.org/plugins/contact-form-7-dynamic-text-extension/