beforeChange

fires before changing the value of a control

beforeChange: (value: object[], file?: object) => boolean | void;

Parameters:

• value: object[] - the value expected to be applied after changes
• file: object - optional, the changed element

Returns:

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

Example

form.getItem("simplevault").events.on("beforeChange", (value, file) => {
    console.log("beforeChange", value, file);
    return true;
});

Change log:

added in v8.2