Mastering ArcGIS Server Development with JavaScript

An overview of the _WidgetBase module

The _WidgetBase module provides the base class necessary to create a dijit module. In itself, it's not a widget, but you can easily build a widget on top of it. The widget created with the _WidgetBase module is bound to an element in the HTML DOM, which can be referred to with its domNode attribute.

The _WidgetBase module also introduces a lifecycle to the widget. The lifecycle refers to how the widget is created, built up, used, and torn down. This module loads the following methods and events that occur within the lifecycle of the widget:

• constructor: This method is called on widget creation. There is no access to the template, but values can be assigned and arrays can be accessed.
• parameters mixed into widget ...