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fires before configuration attributes of a Form control are changed dynamically

beforeChangeProperties: (name: string, props: any) => boolean | void;


  • name|id: string - the name (or id, if the name is not specified) of the Form control
  • props: object - an object with configuration attributes of the control and their new values


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

Example"BeforeChangeProperties", function(name, properties) {    console.log("BeforeChangeProperties", name, properties);    return true;});

Related sample: Form. Events

Change log:

added in v7.0