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JavaScript Form - beforeChange Checkbox Group Event

fires before changing the value of a control

beforeChange: (value: {[id: string]: boolean | string}) => boolean | void;

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

Return false to prevent changing the value of the control; otherwise, true.

Example

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

Change log: The event was added in v8.0

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