override

used to override default classes with new ones

Map override;

Example

class CustomToolbar extends chat.views["messages/toolbar"] {
  // custom logic
}
 
webix.ui({
  view: "chat",
  url: "https://docs.webix.com/chat-backend/",
  override: new Map([
    [chat.views["messages/toolbar"], CustomToolbar]
  ])
});

Related samples

Chat: Custom View

Details

The override property is designed for customizing inner views and services.

It allows setting the Map with a 2D array each, element of which is an array that stores:

the default class you need to customize
a new class (the class to override with).