replace jquery load with fetch (#828)

.gitattributes

@@ -1,4 +1,5 @@
 share/public/javascripts/*.map binary
 share/public/javascripts/*.min.js binary
+share/public/javascripts/jquery-history.js binary
 share/public/css/*.min.css binary
 share/public/swagger-ui/* binary

share/public/javascripts/netdisco.js

@@ -64,30 +64,6 @@ function do_search (event, tab) {
       );
       console.error('There has been a problem with your fetch operation:', error);
     });
-
-//  $(target).load( uri_base + '/ajax/content/' + path + '/' + tab + '?' + query,
-//    function(response, status, xhr) {
-//      if (status !== "success") {
-//        $(target).html(
-//          '<div class="span5 alert alert-error"><i class="icon-warning-sign"></i> ' +
-//          'Search failed! Please contact your site administrator.</div>'
-//        );
-//        return;
-//      }
-//      if (response == "") {
-//        $(target).html(
-//          '<div class="span2 alert alert-info">No matching records.</div>'
-//        );
-//      }
-//
-//      // delegate to any [device|search] specific JS code
-//      $('div.content > div.tab-content table.nd_floatinghead').floatThead({
-//        scrollingTop: 40
-//        ,useAbsolutePositioning: false
-//      });
-//      inner_view_processing(tab);
-//    }
-//  );
 }
 
 // keep track of which tabs have a sidebar, for when switching tab

share/views/index.tt

@@ -113,12 +113,25 @@
     $('.nd_chevron').toggleClass('icon-chevron-up icon-chevron-down');
 
     if (! stats_loaded) {
-      $('#nd_stats').load("[% uri_for('/ajax/content/statistics') | none %]", function(r,s,x) {
+      fetch( "[% uri_for('/ajax/content/statistics') | none %]",
-        if (s == "error") {
+        { headers: { 'X-Requested-With': 'XMLHttpRequest' } })
+        .then( response => {
+          if (! response.ok) {
+            $('#nd_stats_status').addClass('alert-error')
+              .html('<i class="icon-warning-sign"></i> Failed to retrieve system information (server error).');
+            return;
+            // throw new Error('Network response was not ok');
+          }
+          return response.text();
+        })
+        .then( content => {
+          $('#nd_stats').html(content);
+        })
+        .catch( error => {
           $('#nd_stats_status').addClass('alert-error')
-            .html('<i class="icon-warning-sign"></i> Failed to retrieve system information.');
+            .html('<i class="icon-warning-sign"></i> Failed to retrieve system information (network error: ' + error + ').');
-        }
+          console.error('There has been a problem with your fetch operation:', error);
-      });
+        });
       stats_loaded = 1;
     }
   });