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beforeShow

fires before a control or its toggle is shown

beforeShow: (value: {[id: string]: boolean | string | number}, id?: string) => boolean | void;

Parameters:

  • value: object - the current value of the control. The object contains a set of key:value pairs where the key is the id of a toggle and the value is the value/state of the toggle.
  • id?: string - optional, the ID of a toggle of the control

Example

form.getItem("ToggleGroup").events.on("beforeShow", function(value, id) {
    console.log("beforeShow", value, id);
    return true;
});