Request header field Access-Control-Allow-Headers is not allowed by Access-Control-Allow-Headers

I had the same problem. In the jQuery documentation I found: For cross-domain requests, setting the content type to anything other than application/x-www-form-urlencoded, multipart/form-data, or text/plain will trigger the browser to send a preflight OPTIONS request to the server. So though the server allows cross origin request but does not allow Access-Control-Allow-Headers , it will … Read more

jQuery and AJAX response header

cballou’s solution will work if you are using an old version of jquery. In newer versions you can also try: $.ajax({ type: ‘POST’, url:’url.do’, data: formData, success: function(data, textStatus, request){ alert(request.getResponseHeader(‘some_header’)); }, error: function (request, textStatus, errorThrown) { alert(request.getResponseHeader(‘some_header’)); } }); According to docs the XMLHttpRequest object is available as of jQuery 1.4.

HTTP headers in Websockets client API

Updated 2x Short answer: No, only the path and protocol field can be specified. Longer answer: There is no method in the JavaScript WebSockets API for specifying additional headers for the client/browser to send. The HTTP path (“GET /xyz”) and protocol header (“Sec-WebSocket-Protocol”) can be specified in the WebSocket constructor. The Sec-WebSocket-Protocol header (which is … Read more

How to use HTML to print header and footer on every printed page of a document?

If you take the element that you want to be the footer and set it to be position:fixed and bottom:0, when the page prints it will repeat that element at the bottom of each printed page. The same would work for a header element, just set top:0 instead. For example: <div class=”divFooter”>UNCLASSIFIED</div> CSS: @media screen … Read more