How to get read data from response header in jquer

问题:

Possible Duplicate:
jQuery and AJAX response header

If the server is returned data in response header how I can read it. I am sending an AJAX request to a server. It does not return anything but the Location in response header. I want to read that location using JavaScript or jQuery....

回答1:

Both XMLHttpRequest and jqXHR (which is the object jQuery wraps around AJAX requests) have a getResponseHeader() method, so in the always() handler (jQuery) or readyState handler (XMLHttpRequest), do this.getResponseHeader('Location').

Bear in mind that if your server also sends a redirect status code (301/ 302) that redirect will be automatically followed, and there's no way to access the intermediate-headers returned.

回答2:

In JavaScript, using XMLHttpRequest you can do that using getAllResponseHeaders() method.

jQuery also allowing to call that method. See more.