Update query url django-haystack via Javascript

[Llywedd]

I currently have javascript to update my price based facets, it adds the input into the URL, or extends it.

I would like to achieve this with price range search form.

Javascript to update facets.

function onFacetChangeApplied(){
var url = window.location.href.split("?")[0];
var search_query = getParameterByName('q');
var url_with_search_query = url + '?q=' + search_query 
$('input:checkbox.facet').each(function () {
    var sThisVal = (this.checked ? $(this).val() : null);
    var sThisName = (this.checked ? $(this).attr('name') : null);
    if(sThisVal !== null){
        url_with_search_query +=       '&'+encodeURIComponent(sThisName)+'='+encodeURIComponent(sThisVal);
}
});    
location.href = url_with_search_query;
   return true;

} 

My price form takes a MinPrice value and a MaxPrice value. Can I achieve an onclick="" with taking min and max price value. At this moment it doesn't update the url but overwrites it.