beforeHide
fires before a control is hidden
beforeHide: (value: ICheckboxGroupValue, init: boolean) => boolean | void;
Parameters:
value: object
- the current value of the control. 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.init: boolean
- true, if the event is triggered on the control initialization; otherwise, false
Returns:
Return false
to prevent a control from being hidden; otherwise, true
.
Example
form.getItem("CheckboxGroup").events.on("beforeHide", function(value, init) {
console.log("beforeHide", value, init);
return true;
});