How to use underscore.js to produce a flatten result

Question

The json object is

var data = [{\"Parent\":1,\"Child\":[4,5,6]},{\"Parent\":2},{\"Parent\":3}]

How can I use underscore.js chain/map/pluck

Answer 1

Assuming you want to first get the parents and then get the children:

_.chain(data).pluck("Parent")
             .concat(_.flatten(_(data).pluck("Child")))
             .reject(_.isUndefined)
             .value()