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beforeExpand

fires before expanding a Layout cell

beforeExpand: (id: string) => boolean | void;

Parameters:

id: string - the id of a cell

Returns:

Return false to block expanding a cell; otherwise, true.

Example

layout.events.on("BeforeExpand", function(id){    // your logic here    return false;});

Related sample: Layout. Events

Change log:

added in v6.4