Check documentation for the latest version 6.0 of dhtmlxSuite smartRefreshItem DHTMLX Docs

smartRefreshItem

refreshes the specified tree item (gets XML from server, adds new nodes, removes unused nodes)

void smartRefreshItem(string|number id, [string source] );

Parameters

idstring|numberthe top node of the branch
sourcestringserver side script, optional

Available only in PRO Edition

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