Example code
$(document).ready(function(){ $.ajaxSetup({ cache: false, dataType: "json", contentType: "application/x-www-form-urlencoded; charset=UTF-8", beforeSend: function (xhr) { xhr.setRequestHeader('bearer', 'BEARER_KEY_HERE') }, success: function(data,success) {console.log(data); }, error : function(jqXHR, textStatus, errorThrown) { if (jqXHR.status == 404) { alert("not found."); } else { alert("Error: " + textStatus + ": " + errorThrown); } } }); $.ajax({ url: "API_URL", type: "GET", }); });
Note: according to latest Jquery documentation it is not recommended to use $.ajaxSetup();