The number of child nodes can be a one-time load by parent node.
Specify, please, what do you mean: what do you try to do, what it is impossible, what behavior do you expect from a tree?
I mean: when a node has 10000 child nodes，i will One-time loading the 10000 nodes at 2~3 second，
There is a method enableSmartRendering().
Look at the link, there is a sample: dhtmlx.com/docs/products/dht … ering.html
It works in professional version.
But these 2 methods aren’t compatible.
If your tree is SO big, you can try a TreeGrid component, where both modes are compatible: dynamic loading and smart rendering.
Otherwise you have to wait, while your tree will be loaded.
if use the method enableSmartRendering() , 10000node need 40-50 seconds
I’ve check this sample in different browsers and versions i have:
dhtmlx.com/docs/products/dht … ering.html
There are really 2-7 seconds, depending on browser and system, if you have such big tree.
One-time loading 10000 nodes for my example，you example are loading 1000 node,