var host = window.location.hostname; $(document).on('keypress', function (e) { if (e.which == 32) { url = "/capture/toggle"; $.getJSON('http://' + host + ':3000/capture/toggle', function () { }) .done(function (data) { console.log('API worked'); }) .fail(function () { console.log('API Fail'); }) .always(function () { }); } });