Idiomatically accessing json objects with clojurescript

javascript json clojure clojurescript
Toby Hede picture Toby Hede · Mar 22, 2012 · Viewed 8.4k times · Source

Anyone have any docs for idiomatic clojurescript for access a javascript object (returned as json, essentially a hash)?

I have a JSON object returned via an AJAX request:

{
  list: [1,2,3,4,5],
  blah: "vtha",
  o: { answer: 42 }
}

How do I access these fields using clojurescript?

I can do:

(.-list data)

But how does this work when I have nested values and objects?

(.-answer (.-o data))

The above seems to be quite clumsy, especially given the nice js syntax of: data.o.answer.

What is the idiomatic way of accessing json objects with clojurescript?

Note:

I realised that I can actually refer to elements using JS syntax, which is quite handy actually. So the following will work correctly:

(str data.o.answer)

Answer

dnolen picture dnolen · Mar 22, 2012

You probably want aget:

(aget foo "list")

aget isn't variadic yet, but hopefully will be soon it's variadic now. (aget data "o" "answer") would work

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