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beforeValidate

fires before the control value is validated

beforeValidate: (value: ICheckboxGroupValue) => boolean | void;

Parameters:

value: object - the value to be validated. The object contains a set of key:value pairs where key is the id of a checkbox and value is the value/state of the checkbox.

Returns:

Return false to cancel the default action of the event; otherwise, true.

Example

form.getItem("CheckboxGroup").events.on("BeforeValidate", function(value) {    console.log("BeforeValidate", value);    return true;});