Drupal 8 Custom Module which creates a block that pulls in and displays data from the Jokes API. The block allows you to control how many jokes you would like to display.

Create a custom directory in the modules directory for your Drupal 8 website if you don't have one already. Place this jokes_api directory inside. Enable the module like you would any other module (it will show under Custom in the list on the modules page (Extend)).

Place the block in the region you'd like it to show - it will be called Jokes API block in the list. In the Output Limit field, type in how many jokes you would like to display in the block.

This is an example to show how you can create a simple custom module in Drupal 8 and how you can integrate an API's fetched data inside of a block. It can be easily expanded on and modified for other applications.