expand

fires before collapsing a treegrid

note

The event works only for Grid with the type: "tree" configuration option

expand: (rowId: string | number) => void;

Parameters:

The callback of the event is called with the following parameter:

• rowId: string | number - the id of an expanded row

Example

const grid = new dhx.Grid("grid_container", {
    type: "tree",
    columns: [
       // columns config
    ],
    data: dataset,
}); 

grid.events.on("expand", (rowId) => {
    // your logic here
});