JavaScript | findNested | Find a property by its name deeply in an object (without knowing its level).

find_nested.coffee

# Based on: http://stackoverflow.com/questions/15642494/find-property-by-name-in-a-deep-object
findNested = (obj, key, memo) ->
  proto = Object.prototype
  ts    = proto.toString

  '[object Array]' != ts.call(memo) and (memo = [])

  for own k, v of obj
    if k == key
      memo.push v
    else if '[object Array]' == ts.call(v) or '[object Object]' == ts.call(v)
      scope.findNested v, key, memo
  memo

find_nested.js

// From: http://stackoverflow.com/questions/15642494/find-property-by-name-in-a-deep-object
function findNested(obj, key, memo) {
  var i, proto = Object.prototype, ts = proto.toString;
  ('[object Array]' !== ts.call(memo)) && (memo = []);
  for (i in obj) {
    if (proto.hasOwnProperty.call(obj, i)) {
      if (i === key) {
        memo.push(obj[i]);
      } else if ('[object Array]' === ts.call(obj[i]) || '[object Object]' === ts.call(obj[i])) {
        findNested(obj[i], key, memo);
      }
    }
  }
  return memo;
}