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

onGroupStateChanged

fires when a group was opened/closed

void onGroupStateChanged(string|number value,boolean state){ ... };

Parameters

valuestring|numberthe key value of a group
statebooleanthe open state, true - opened

Available only in PRO Edition

Example

grid.attachEvent("onGroupStateChanged", function(value,state){
    //your code here
});

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