How do I make an extension that retrieves the source code of a web page?

[vknow360]

:cough:

Extensions vs built-in Blocks

In 2015 Hal Abelson posted the following in the App Inventor Google Groups: 4 Aug 2015, 15:40:19 to MIT App Inventor Forum The MIT App Inventor team is delighted to announce the availability of Extension Components for testing. We hope the Extension Components will prove to be a major enhancement to App Inventor: Extensions provide a way for anyone to build their own App Inventor components, which others can then use in creating apps. App Inventor is free and open software, so people hav…