Getting property from an Javascript object

Question

I have such a environment to start from:

(defn field-name "blah")

(defn obj (js* "{
                 list: [1,2,3,4,5],
                 blah: \"vtha\",
                 o: { answer: 42 }
               }")

How do I get (idiomatic way) blah field using field name var?

(aget obj field-name)

works, but it is intended for arrays (docs say)

Relevant to this question: clojurescript.org/news/2017-07-14-checked-array-access — Mike Fikes
– Mike Fikes, Commented Jan 23, 2018 at 21:47

Piotrek Bzdyl · Accepted Answer · 2018-01-22 14:37:03Z

6

You can use goog.object/get and I think this is idiomatic way to access the properties.

I would also recommend binaryage/cljs-oops that is addressing this very problem.

answered Jan 22, 2018 at 14:37

Piotrek Bzdyl

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1 Comment

Mike Fikes Over a year ago

And if you need to go deeper, goog.object/getValueByKeys is nice: (goog.object/getValueByKeys obj #js ["o" "answer"]) yields 42 and (goog.object/getValueByKeys obj #js ["list" 2]) yields 3. Also see blog.fikesfarm.com/posts/…

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