I am implementing an application which relies upon communication between a JavaScript client and a server which knows how to respond to the client using JSONP notation.  I am attempting to handle the case in my Javascript client where my server retur...
We are currently engaged in a project hosted by our university. We are supposed to open a JSON file with some data in it, provided by a web server.  The code that is used in this scenario is the following:  listeAbrufen: function() {     var load = n...
On my page I have the following JavaScript using jQuery:  $("#my-div").append($("<img>", {src: "/api/userimage/"+imageHash}));   It works fine when the server returns 200 OK for the image but not when it returns 304 Not...
Should an OPTIONS request ever return a 429?  The problem is really that a Browser client (js) can not detect the 429 correctly when returned from an OPTIONS request. So I'm leaning towards only returning 429 for non OPTIONS requests.  What is be...
Lets say I have a single-page web application with a list of items where a user can click on an item to view more info about it. The actual item info is loaded asynchronously, using an AJAX GET request to the URL http://www.example.com/item/[id] and...
I am building an app in which I am trying to build my own logging system for each request.  For each request, I'd like to log the timestamp, the method used, the route, and finally the response code that has been sent to the client.  I have the f...
I'm trying to handle a Status: HTTP/1.1 204 No Content error. I'm using .fail() to handle all other errors, but 204 is not handled by this function. While trying if (jqXHR.status == "204") {alert("error!");}, the alert is not...
I found that fetch API always throw TypeError, ERR_EMPTY_REPONSE or NetworkError when attempting to fetch resource for 102 or any code smaller than 200, regardless of the body of the response.  This took me tremendous time to figure out. Behavior is...
Is it possible to get the error code of a failed preflight request so that I can print a meaningful error message? (Or is there a habit of printing a static error for all failed preflight requests no matter the code?)  Clearly, the status code 401 is...
I use this pseudo-class to make Ajax request to server:  function RequestManager(url, params, success, error){     //Save this Ajax configuration     this._ajaxCall = null;     this._url= url;     this._type = params.type;     this._success = functio...

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