js filter text
<script>
$('input[name="search_field"]').on("keyup", function() {
filtrate($(this).val().toLowerCase());
});
function filtrate(searched) {
$(".filter-key > h3").filter(function() {
var isHidden = ($(this).text().toLowerCase().indexOf(searched) > -1) ? 'block' : 'none';
$('.filter-key').css('display', isHidden);
});
}
</script>