loop through nested object properties

Question

I am trying to check for an empty value in a nested object, how would I loop through the nested properties?

for (var propt in updatedInputs) {

  if (updatedInputs[propt] == "") this.cancelSubmit();

  // check for nested properties
  if (updatedInputs.hasOwnProperty(propt)) {

    // loop through nested properties here

  }
}

Sample object:

Object {contacts: Array[5]}
    contacts: Array[5]
    0: "04354355"
    1: "24349878779"
    2: "wqewqewqeqw"
    3: "wqewqeqwe"
    4: ""

You mean if one of the nested properties were an array or an object? — Travis J, Feb 03 '16 at 18:59
That sample object isn't a valid js object, the syntax is wrong. Also, are you trying to loop through a nested array or a nested object? — nem035, Feb 03 '16 at 19:05
Can you please show how `updatedInputs` looks like? Or be more specific on which type (array or object) you are looping on, and, if needed, how many nested levels you need to check. — nem035, Feb 03 '16 at 19:18
This is completely unclear what you are working with. Your broken code showing undefined variables is not a good substitute for a proper explanation and reasonable sample of input data and expected results — charlietfl, Feb 03 '16 at 19:21

wrleskovec · Accepted Answer · 2016-02-03T19:49:35.667

2

Fine I think it'll do what you want now.

function iterObj(obj) {

  for (var key in obj) {
    console.log(key + ': ' + obj[key]);
    if (obj[key] !== null && typeof obj[key] === "object") {
      // Recurse into children
      iterObj(obj[key]);
    }
  }
}

edited Feb 03 '16 at 19:49

answered Feb 03 '16 at 19:09

wrleskovec

326
1
7

This will only work if `updateInputs` is an array but the OP says he's looping over an object. There's no such thing as `forEach` on an object. – nem035 Feb 03 '16 at 19:13
If it did, then there would be no point for `$.each()` ^_^ – nem035 Feb 03 '16 at 19:15

loop through nested object properties

1 Answers1