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Question  posted by Yvan on Nov 03, 2008 06:57
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Performance question: DHTMXLTree

I have a question about the performances of the tree...

When having a rather large tree-structure loaded in the browser what can one do to avoid slow downs like the ones I am experiencing with my tree? Some general suggestions? Memory allocation optimizations? Something?
Answer posted by Support on Nov 03, 2008 07:46
If your tree has not many nodes per level, you can use Smart XML Parsing (the most preferable):
 
    tree.enableSmartXMLParsing(true);

http://www.dhtmlx.com/docs/products/dhtmlxTree/samples/loading_processing_data/pro_smart_parsing.html

If there are a lot of nodes on one level in the tree, you can try to use  Smart Rendering functionality (dhtmlxtree_srnd.js should be attached):
 
    tree.enableSmartRendering(true);

http://www.dhtmlx.com/docs/products/dhtmlxTree/samples/loading_processing_data/pro_smart_rendering.html

Both functionalities work are available only in PRO edition. Their idea - data are loaded at once, but parsed by portions  (the detailed information can be found in the documentation http://www.dhtmlx.com/docs/products/dhtmlxTree/doc/alpha.html).


Or you can use dynamic loading functionality (included into Standard edition):

http://www.dhtmlx.com/docs/products/dhtmlxTree/doc/dyn_loading.html

http://www.dhtmlx.com/docs/products/dhtmlxTree/samples/loading_processing_data/tree_dyn_loading.html