Progressive Web Application Development by Example

Response object

The response object is almost identical to the request object. It is created when a request receives an answer from the server. Response objects also have headers and a body, the same object types as request objects.

Responses are normally created by the platform when a response is received from the server. However, you can create a new response. This is more common when you want to transform a response.

A scenario I have dealt with is accessing data from an older API that returned flat data. The flat data needed to be transformed into a multi-dimensional JSON object. Instead of repeating that CPU intensive process, I transformed the data and cached the transformed response.

The Response constructor has two parameters, a Body ...