The point is that the JSON parser runs in the browser - as native code - so it's...

bzbarsky · on Dec 24, 2016

It may be hard to match the performance of the parsing per se.

But the typical data flow with JSON goes like this:

1) Get a string. 2) JSON.parse it into an object graph. 3) Use that object graph to build the data structure you really care about (e.g. a DOM).

If you parse yourself you may be able to cut out the middleman object graph. That might be worthwhile; needs measuring.