In short, set cacheto truein your call options $.ajax.
jQuery adds that to split the cache.
In jQuery there is an option to disable this: (from http://api.jquery.com/jQuery.ajax/ )
cache
The default true, falsefor dataType 'script' and 'jsonp'
false, . false , "_ = [TIMESTAMP]", URL.
cache true:
$.ajax({
type: 'GET',
cache: true,
url: 'http://127.0.0.1:6789/dir',
data: "",
success: function (data) {
},
dataType: 'html'
});