NodeExpanded プロパティ (DataTreeClientEvents)

// The client event 'NodeExpanded' takes two parameters sender and e
// sender  is the object which is raising the event
// e is the DataTreeNodeEventArgs
   
function WebDataTree_NodeExpanded(sender, e) {
    //Gets the node object that is expanded
    var node = e.getNode();

    //Gets the text of the node
    var nodeText = node.get_text();

    alert("Node '" + nodeText + "' expanded!");
   
}