javascript - Get headers Ajax Jquery -


i try header value "date" gives: 

xhr.getresponseheader not function

i see response header in firebug , exists :s

maybe no jquery support? can done in javascript instead maybe? must work, can see headers...

code:

function ajaxdate(myurl){    var res;     var ajaxcall=$.ajax({         type: 'get',         url: myurl,     crossdomain: true,         async: false,         cache: false     }).always(function(output, status, xhr) {             //alert(xhr.getresponseheader("mycookie"));         console.log(xhr);         console.log(output);         console.log(status);     res=xhr.getresponseheader('date');         });     return res; }

debug dump firebug, url: www.google.se:

200 ok 92ms jquery.min.js (line 5)

response headers

alternate-protocol  80:quic cache-control   private, max-age=0 content-encoding    gzip content-type    text/html; charset=utf-8 date    fri, 09 aug 2013 00:57:43 gmt expires -1 p3p cp="this not p3p policy! see http://www.google.com/support/accounts/bin/answer.py?hl=en&answer=151657 more info." server  gws set-cookie  pref=id=e6503cda76a:ff=0:tm=1376009863:lm=1376009863:s=pbyclnzqvnzs2k5s; expires=sun, 09-aug-2015 00:57:43 gmt; path=/; domain=.google.se, expires=sat, 08-feb-2014 00:57:43 gmt; path=/; domain=.google.se; httponly transfer-encoding   chunked x-frame-options sameorigin x-xss-protection    1; mode=block

request headers

accept  */* accept-encoding gzip, deflate accept-language en-us,en;q=0.5 host    www.google.se origin  http://localhost/ referer http://localhost/ user-agent  ....

console.log(xhr)

[exception... "failure" nsresult: "0x80004005 (ns_error_failure)" location: "js frame :: http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js :: .send :: line 5" data: no] { name="ns_error_failure", message="failure", result=2147500037, more...} auto.js (line 52)

console.log(output)

object { readystate=0, status=0, statustext="[exception... "failure"...d :: line 5" data: no]"} auto.js (line 53)

console.log(status)

error

the signature of 

.always(function(data|jqxhr, textstatus, jqxhr|errorthrown) { });

if mapped method

.always(function(output, status, xhr) {

this line

res=xhr.getresponseheader('date'); // if response success

supposed be

res=output.getresponseheader('date'); // if response fails

looks method failing maps same method errorthrown

instead can write separate fail method handle or make small change in syntax.

res= output.getresponseheader ? output.getresponseheader.get('date')                               : xhr.getresponseheader.get('date')

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