ContextMenu plugin memory leak

[yzhang921]

Hi Vakata, as title described that maybe context menu plugin has a memory leak issue.
First, I doubt that there is some problem with my code. After I checked again and again and found out if I remove the contextMenu plugin then the memory leak issue disappeared.
Even if I didn't set any context items and turn on contextMenu plugin setting, memory leak also exists.

         //treeOption.contextmenu.items

           destroyed() {
            $(document).unbind('context_show.vakata');
            $(this.$el).find("#tree-body").empty();
            this.treeRef.destroy();
            $(this.$el).remove();
            $('context_show.vakata').remove();
            this.treeRef = null;
            this.tree = null;

[vakata]

Sorry but I can't fix this - please provide a PR if you know where the leak is.

[RamPonds]

Facing the memory leak in the similar fashion. $.jstree.plugins.contextmenu.prototype._data.core.original_container_html.prevObject.prevObject

[alex-Hudson]

I also am facing this problem. In my application I also removed all context menu items and found the memory leak. When I removed the plugin from the jsTree plugins the memory leak was no longer observed

[alex-Hudson]

@vakata I have caught the memory leak. I will submit a PR.

[alex-Hudson]

This issue is fixed by PR #2557 @vakata