Upload multiple files with XMLHttpRequest to Express.js 3.5 Server

Question

I\'m trying to build a file uploader with the native FileAPI in JavaScript and I want to upload the files via XMLHttpRequest (without jQuery) to a Node.js server, which uses

Answer 1

Thx to @Pengtuzi I solved it:

I used the FormData API to upload the files. My mistake was that I thought the error would happen on the server.

Here's the code that solved it for me:

function uploadFiles(files) {
    var xhr = new XMLHttpRequest();
    var formData = new FormData();
    xhr.onload = successfullyUploaded;
    xhr.open("POST", "http://localhost:3000/upload", true);
    xhr.setRequestHeader('X-Requested-With','XMLHttpRequest');
    for(var file in files) {
        formData.append("uploads", files[file].data);
    }
    xhr.send(formData);
}