javascript - Pass a variable to a function from inside an ajax call -


I tried to use this loop to read my url to read my modified time: 

  Var arr = []; // ... fill ur with push for push (var e in arr) {nodename = arr [e]. Hostname; Node_json = "/ nodes /" + nodename; Html + = '& lt; A href = "'+ node_json +'" target = "_ blank" id = "host _ '+ node name +'" & gt; Data & lt; / A & gt; '; Xhr = $ .ajax ({url: node_json, success: (function (nn) {$ ('# host_' + nn) .append ("Last modified:" + xhr.getResponseHeader ("last-modified")); }) (Node name)});

It does some work already, I comment on the success line: I get calls on all node-files, and in firebug, I Many times in the header of different modified calls.

At first I was closed, (see) and only me got the last line modified with all the results. So I try to take action in a different function.

But it gives:

Reference: xhr is not defined
$ ('# host _' + Nn) .append ("Last modified:" + Xhr.getResponseHeader ("last-modified") ...

How do I get xhr in that job?

I also tried: 

  ... xhr [e] = $ .jg ({url: node_json, success: add_result_to_info (nodename, e)})}} // external loop Function add_result_to_info (nn, e) {$ ('# host_' + nn) .append ("Last Modified:" + xhr [e] .getResponseHeader ("Last-Modified"));}

Source of AJAX calls:

If arr is actually an array, then just .forEach or better .map (old browsers Use with a shim), without the need to abort the extra, contains the scope of each repetition: 

  var xhrs = arr.map (function (e) {var name name = E.hostname; var node_json = "/ nodes /" + node name; Html + = '& lt; A href = "'+ node_json +'" target = "_ blank" id = "host _ '+ node name +'" & gt; Data & lt; / A & gt; '; Return ($ ('# host_' + node name). Append ("Last modified:" + xhr.getResponseHeader ("last-modified") ($ ('data, position, xhr)));); }); The reason for using   
  var xhrs = arr.map ()  is the reason for using  .forEach  is that you get (free) then Once every AJAX request has been completed once the ability to call another callback: 
 
  $ When.apply ($, xhrs) .then (function () {// woot! They all finished .. ..});

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