How to prefilter search, when passing paramenter from URL about itemsjs HOT 3 CLOSED

        computed: {
            searchResult: function () {

                var uri = window.location.href.split('?');
                //if URL has params filtered from params passed.
                if (uri.length == 2) {
                    var result = itemsjs.search({
                        query: this.query,
                        filters: this.filters,
                        prefilter: function(items) {
                            return items.filter(item => {
                            //This is where I will pass in my parameters from URL eg. ?careerssearch=&Job_family_group=2&Organisation_name=0&Primary_location_country=GB
                            return item.Primary_Location_Country == "US";
                        })
                        }
                    })
                }
                //if URL has no params list as nomarl...
                if (uri.length == 1) {
                    var result = itemsjs.search({
                    query: this.query,
                    filters: this.filters
                    })

                }
                
                return result
            }
        }