Recursive hasOwnProperty for objects

Question

I have an object as:

const object = {};
object.property1 = 54;
object.property1.property1 = 60;

now I would like to achieve something like this:

if(object.hasOwnProperty('property1')){
//do something
}
else if(object.hasOwnProperty('property1').hasOwnProperty('property1')){
//do something
}
else{
//do something
}

But it fails at the else if part. why can't we use hasOwnProperty recursively? what is the workaround? I am stuck at this for many hours now.

I have tried to use:

if(object.property1.property1){
//do something
}

but this gives me undefined

So how to get around this situation? Please help!

Answer 1

I would use a recursive function

const object = {};
object.property1 = {};
object.property1.property2 = 60;

if (hasOwnPropertyRecursive(object, 'property2')) {
  console.log('yes')
} else {
  console.log('no')
}

function hasOwnPropertyRecursive(obj, prop) {
  if (typeof obj !== 'object' || obj === null) return false
  if (obj.hasOwnProperty(prop)) return true
  return Object.getOwnPropertyNames(obj).some(key => hasOwnPropertyRecursive(obj[key], prop))
}