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tree.tree.root.expandOnLoad ​

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Fetches descendants when the tree loads.

This is a compact property lookup. Use the contextual guide below for the complete feature model, configuration sequence, interactions, examples, and limitations.

Context
tree panel
Accepted value
boolean
Required
No
Default
No documented default.

User scenarios

  • Open the hierarchy immediately.

Related parameters

Contextual guide and evidence

  • Contextual guide: Open the complete human guide
  • Source: apps/panel/src/types/panel-tree.ts, symbol PanelTreeRoot
  • Example coverage: Partial — The contextual guide explains the field and its behavior, but no focused example isolates it.
  • Demo coverage: Partial — The fixture loads a hierarchy. Open the runnable demo .

The panel source named above remains authoritative for runtime behavior. This secondary reference page is generated from the reviewed parameter matrix and does not replace the contextual guide.