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An introduction to service workers Put simply a service worker is a script that runs in the browser. They can intercept network traffic, send push notifications and perform background syncs. If that was a bit of a blur don’t worry, we’ll take a step back and take a look at each in...

Recognising the advantages and disadvantages of async/await requires an understanding of callbacks and promises. Before we review these lets first remind ourselves of the problem they solve: Asynchrony. Javascript is a blocking, synchronous single threaded language. This essentially means it can only perform one...