SP.NavigationNode.get_isVisible() broken? - sharepoint

Question

I need to read the "Top Nav", the "Children Nodes" and check if each node is visible.
I am using JSOM to accomplish this. Everything is working fine except for the get_isVisible() function. It always returns true. MSDN: http://msdn.microsoft.com/en-us/library/office/jj246297.aspx
I am on a publishing site in 2013 and I know some of the items are hidden. (My web and context are defined outside of this snippet)
var visParents = [], visChildren = [];
var topNodes = web.get_navigation().get_topNavigationBar();
context.load(topNodes);
context.executeQueryAsync(onQuerySucceeded, onQueryFailed)
function onQuerySucceeded() {
var nodeInfo = '';
var nodeEnumerator = topNodes.getEnumerator();
while (nodeEnumerator.moveNext()) {
var node = nodeEnumerator.get_current();
nodeInfo += node.get_title() + '\n';
if (node.get_isVisible())
visParents.push(node);
}
console.log("Current nodes: \n\n" + nodeInfo);
console.log("Visible Parents", visParents)
}
function onQueryFailed(sender, args) {
alert('Request failed. ' + args.get_message() + '\n' + args.get_stackTrace());
}

Answer 1

It is a known issue, it seems that SP.NavigationNode.isVisible property does not correspond to the property that indicates whether navigation node is hidden or shown.
Please refer "Hidden" property of SPNavigationNode for a details
The following function demonstrates how to retrieve hidden node Urls:
function getGlobalNavigationExcludedUrls(Success,Error)
{
var context = new SP.ClientContext.get_current();
var web = context.get_web();
var subwebs = web.get_webs();
var pagesList = web.get_lists().getByTitle("Pages");
var pageItems = pagesList.getItems(SP.CamlQuery.createAllItemsQuery());
var allProperties = web.get_allProperties();
context.load(web);
context.load(subwebs);
context.load(allProperties);
context.load(pageItems);
context.executeQueryAsync(
function() {
var excludedIds = allProperties.get_item('__GlobalNavigationExcludes').split(';');
var exludedUrls = [];
for (var i = 0; i < excludedIds.length - 1; i++ )
{
for (var j = 0; j < subwebs.get_count(); j++ )
{
var subweb = subwebs.getItemAtIndex(j);
if(subweb.get_id().toString() == excludedIds[i]){
exludedUrls.push(subweb.get_serverRelativeUrl());
break;
}
}
for (var j = 0; j < pageItems.get_count(); j++ )
{
var pageItem = pageItems.getItemAtIndex(j);
if(pageItem.get_item('UniqueId').toString() == excludedIds[i]){
exludedUrls.push(web.get_serverRelativeUrl() + pageItem.get_item('FileRef'));
break;
}
}
}
Success(exludedUrls);
},
Error
);
}
//Usage: print excluded nodes Urls
getGlobalNavigationExcludedUrls(function(excludedNodeUrls){
for (var j = 0; j < excludedNodeUrls.length; j++ )
{
console.log(excludedNodeUrls[j]);
}
},
function(sender,args){
console.log(args.get_message());
});