How to monitor the progress of a Javascript fetch - request and cancel it on demand.

How to monitor the progress of a JavaScript fetch - request and cancel it on demand.

摘要

Waiting blows. That goes for many situations in life, including when a website you visit is busy loading new data. However, it's usually helpful to visualize that something is happening in the background. Or be able to pull the plug. Read on to find out how that's to be done with the fetch API.