CORS in Box API

Box provides simple storage of files, which may be shared via view/download links. The Box API supports CORS on an app-by-app basis. Contact the Box team with a description of your use case so that they can allow access from your local domain when making the CORS request. They provide an example of an Ajax upload using jQuery:

// Set up the multipart form using HTML5 FormData object
var form = new FormData();

// The content of the file
// The file content could be read via jQuery.get()
var fileBody = '<p>hey!<p>';

// JS file-like object
var blob = new Blob([fileBody], { type: 'text/xml'});

// Add the file to the form
form.append('file', blob);

// Add the destination folder for the upload to the form
form.append('parent_id', '0');

var uploadUrl = 'https://upload.box.com/api/2.0/files/content'; 

// The Box OAuth 2 Header. Add your access token.
var headers = {
  Authorization: 'Bearer YOUR_ACCESS_TOKEN' // your Box API Access Token
};

$.ajax({
  url: uploadUrl...