Only get IDs from nested object of array using recursive functions?

Question

Input:
var treeData= {
id: '1',
name: 'er',
children: [{
id: '2',
name: 'es',
children: [{
id: '3',
name: 'es',
[{
id: '4',
}]
}]
}]

}
OUTPUT:
["1","2","3","4"]
NOTE: Should be done using a recursive or any other simple way to achieve this.
function.

Answer 1

What is your question, because the sentence with a question mark is more like a statement.

If you need any help, please show your attempt and be specific about what you are not understanding.

Answer 2

I need only IDs from nested objects

Answer 3

That's great. But where's your attempt and state any errors you may be getting.

Answer 4

I can use four for loops to get ids from each object, but in future another object will added into same object.

const ids = [];
JSON.stringify(treeData, (key, value) => {
if (key === "id") ids.push(value);
return value;
});
console.log(ids);
This will works but I need to achieve this using recursive functions

Answer 5

The object in the snippet has structure flaw, it's unusable for testing.

Answer 6

You can use Generator functions to solve this:

function* get_id(d){
yield* ('id' in d ? [d.id] : [])
for (var c of ('children' in d ? d.children : [])){
yield* get_uid(c)
}
}
let obj = {'id': '1','name': 'er',
'children': [{'id': '2','name': 'es',
'children': [{'id': '3','name': 'es','children':[{'id':'4'},{'id':'5'}]
}]
}]
}
var result = [...get_id(obj)]
console.log(result);

Working Link: https://jsfiddle.net/Lwpyasxu/