Is it possible to alter http request's header using javascript?

Question

Is it possible to use some kind of JavaScript to change or set a HTTP request\'s header?

Answer 1

Using the XMLHttpRequest object, you can use the setRequestHeader function.

A little code to get you on your way:

var xhr = new XMLHttpRequest()
xhr.open("GET", "/test.html", true);
xhr.setRequestHeader("Content-type", "text/html");

xhr.send();

The method setRequestHeader must be called after open, and before send.

More info: https://developer.mozilla.org/en/DOM/XMLHttpRequest#setRequestHeader()