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A general question about Node's `response.on`

response.on('data', (d) => { process.stdout.write(d); });

I understand response is an object, and I think .on is a method on that object(...?). I can't find any docs on the .on method, what (presumably fundamental!) purpose does it serve?

1 Answer

Steven Parker
Steven Parker
229,645 Points

The response.on() method establishes event handlers.

The first argument is the type of event, and the second one is the function to be called when the event occurs.

Your example above establishes a handler for the data event that will simply write out each chunk of data as it arrives.

There are several examples of .on() in the Node documentation for the HTTP module.