How To Iterate Through Every Object.child In A Deeply Nested Object?

I have following structure: instance: { children: [instance, instance ...] } As you can see each instance has children array with another instances in it, hence this repetition

Solution 1:

You can recursively iterate over all instances:

function iterate(instance) {
  for (let child of instance.children) {
    iterate(child);
  }
}

Example:

instance = {
  name: 'Parent',
  children: [{
    name: 'Child 1',
    children: []
  }, {
    name: 'Child 2',
    children: [{
      name: 'Grandchild 1',
      children: []
    }]
  }]
};

functioniterate(instance, f) {
  if (f)
    f(instance.name);
  for (let child of instance.children) {
    iterate(child, f);
  }
}

iterate(instance, console.log);

Output:

Parent
Child 1
Child 2
Grandchild 1