How to use XHR API in Node.js?
You don’t really need an XHR, since you can use http.request that comes natively with NodeJS, with it you can send GET, POST and PUT requests with headers and body. Here is the link to the documentation http.request.
xmlhttprequest
get SENT headers in an XMLHttpRequest
There is no method in the XMLHttpRequest API to get the sent request headers. There are methods to get the response headers only, and set request headers. You’ll have to either have the server echo the headers, or use a packet sniffer like Wireshark.
xmlhttprequest for local files
Historically, you can’t query for local files from JavaScript (or shouldn’t be allowed to, or something’s odd). This would be a serious breach of security. There are only a few circumstances where you can do this, but in general they involve specific security settings requiring to be set for your browser, to either lift the … Read more
XHR Upload Progress is 100% from the start
I also recently had some difficulty setting an event listener for XHR onprogress events. I ended up implementing it as an anonymous function, which works beautifully: xhr.upload.onprogress = function(evt) { if (evt.lengthComputable) { var percentComplete = parseInt((evt.loaded / evt.total) * 100); console.log(“Upload: ” + percentComplete + “% complete”) } }; I stumbled across a lot … Read more
Browser waits for ajax call to complete even after abort has been called (jQuery)
Thank you for your replies! It turns out I was completely wrong about this being a browser issue – the problem was on the server. ASP.NET serializes requests of the same session that require session state, so in this case, the next page didn’t begin processing on the server until those ajax-initiated requests completed. Unfortunately, … Read more
Can onprogress functionality be added to jQuery.ajax() by using xhrFields?
Short answer: No, you can’t do what you want using xhrFields. Long answer: There are two progress events in a XmlHttpRequest object: The response progress (XmlHttpRequest.onprogress) This is when the browser is downloading the data from the server. The request progress (XmlHttpRequest.upload.onprogress) This is when the browser is sending the data to the server (including … Read more
.NET CORE 3 Upgrade CORS and Json(cycle) XMLHttpRequest Error
The problem was occurring because in .NET Core 3 they change little bit the JSON politics. Json.Net is not longer supported and if you want to used all Json options, you have to download this Nuget: Microsoft.AspNetCore.Mvc.NewtonsoftJson. After that in your Startup.cs file change/fix/add line where you are adding MVC (in the ConfigureServices method. So: … Read more
Fallback for FormData in IE 8/9
I know only one possible solution, but it’s not really 1-1 fallback for IEs. There are no possible communication API for sending files, because you cannot bind input fields in old browsers, like in a modern ones using FormData. But you can send whole form using an iframe. For this case you can use jquery.form … Read more
An error occurred in the secure channel support – Classic ASP HTTP Request
I have had the exact same problem after migrating from 2003 to 2008 R2 and found the solution. Change: Set objhttp = Server.CreateObject (“MSXML2.ServerXMLHTTP.6.0”) to: Set objhttp = Server.CreateObject (“MSXML2.XMLHTTP.6.0”) and your problem will go away. I tried to find the pros and cons about both objects, but haven’t yet found a reason to not … Read more
How can I modify the XMLHttpRequest responsetext received by another function?
Edit: See the second code option below (it is tested and works). The first one has some limitations. Since you can’t modify any of those functions, it appears you have to go after the XMLHttpRequest prototype. Here’s one idea (untested, but you can see the direction): (function() { var open = XMLHttpRequest.prototype.open; XMLHttpRequest.prototype.open = function(method, … Read more