$(document).ready(function() {
    $(".searchButton").on("click", e => filterSearch());
    $(".searchInput").on("click touchend mouseup mousedown keypress  keyup change blur", e => filterSearch());

});

function filterSearch() {
    if ($('.searchInput').val().length) {
        var value = $('.searchInput').val().toLowerCase();
        $("[data-search-target]").filter(function() {
            $(this).toggle($(this).attr('data-search-target').toLowerCase().toLowerCase().indexOf(value) > -1)
        });
        return;
    }
    $("[data-search-target]").show();