https://community.esri.com/t5/web-appbuilder-custom-widgets-questions/wab-what-is-the-reason-of-wrapping-the-button/m-p/1156166#M14708 <P>This is part of the _WidgetBase structure that Dojo uses. It makes sure that everything is dealt with properly when the widget is destroyed. Read more about it under the "Owning handles" section of this page <A href="https://dojotoolkit.org/documentation/tutorials/1.10/understanding_widgetbase/index.html" target="_blank" rel="noopener">https://dojotoolkit.org/documentation/tutorials/1.10/understanding_widgetbase/index.html</A></P> Tue, 22 Mar 2022 15:41:46 GMT KenBuja 2022-03-22T15:41:46Z https://community.esri.com/t5/web-appbuilder-custom-widgets-questions/wab-what-is-the-reason-of-wrapping-the-button/m-p/1156159#M14707 <P><SPAN>I use WebAppBuilder 2.22 (developer edition) to develop 3D web apps with my developed custom widgets (esri js API 4.22) for our portal.</SPAN></P><P><SPAN>However, I do not know why in all ESRI widgets code, everywhere when linking button click to a function, the linkage is wrapped with "this.own".</SPAN></P><P><SPAN>What is the purpose and benefit of doing it?</SPAN></P> Tue, 22 Mar 2022 15:31:34 GMT https://community.esri.com/t5/web-appbuilder-custom-widgets-questions/wab-what-is-the-reason-of-wrapping-the-button/m-p/1156159#M14707 MichaelLev 2022-03-22T15:31:34Z https://community.esri.com/t5/web-appbuilder-custom-widgets-questions/wab-what-is-the-reason-of-wrapping-the-button/m-p/1156166#M14708 <P>This is part of the _WidgetBase structure that Dojo uses. It makes sure that everything is dealt with properly when the widget is destroyed. Read more about it under the "Owning handles" section of this page <A href="https://dojotoolkit.org/documentation/tutorials/1.10/understanding_widgetbase/index.html" target="_blank" rel="noopener">https://dojotoolkit.org/documentation/tutorials/1.10/understanding_widgetbase/index.html</A></P> Tue, 22 Mar 2022 15:41:46 GMT https://community.esri.com/t5/web-appbuilder-custom-widgets-questions/wab-what-is-the-reason-of-wrapping-the-button/m-p/1156166#M14708 KenBuja 2022-03-22T15:41:46Z https://community.esri.com/t5/web-appbuilder-custom-widgets-questions/wab-what-is-the-reason-of-wrapping-the-button/m-p/1158405#M14710 <P>Thank you!</P><P>May I ask - I can write "this.someButton.onClick = this.someHandlerFunction;"</P><P>How is it, compared to "this.own(on(..." ?</P> Mon, 28 Mar 2022 17:29:57 GMT https://community.esri.com/t5/web-appbuilder-custom-widgets-questions/wab-what-is-the-reason-of-wrapping-the-button/m-p/1158405#M14710 MichaelLev 2022-03-28T17:29:57Z