Looping through objects

[beta5332]

Hi,

I’ve been playing with for…in and I can’t figure out how to iterate through nested objects acting as properties of other objects. I’ve looked through the documentation and searched the forum but can’t find anything. Can a single loop iterate through an object and the object’s properties which also have properties? I’m attaching my attempt as a reference.

[stetim94]

you could check if lasagne[consistsOf] is an object, if it is an object, you could use another loop?

then you get something like:

for (let nestedeObject in lasagne[consistsOf])

[beta5332]

Thanks for the reply, where should I put the second loop? Inside the first one? I’m totally lost here. The closest I came to what I meant to do was this

[stetim94]

I can’t run code from a screenshot, please copy paste your code to the forum.

[beta5332]

Oh, sure

let lasagne = {
  cuisine: 'Italian',
  ingredients: {
    pasta: 'large sheets',
    sauce: 'tomato, bechamel',
    meat: 'minced'
  },
  'serve with': 'red wine',
  instructions: {
    cook() {console.log(`Cook ${ingredients}, put into layers, bake.`)}
  },
  cost: '$20'
};


for (let consistsOf in lasagne) {
  console.log(`${consistsOf}: ${lasagne[consistsOf]}`)
  for (let nestedObj in lasagne[consistsOf]) {
    console.log(`${lasagne.consistsOf[nestedObj]}`)
  }
};

[stetim94]

not all properties have an object as value, so you will need to do some kind of condition here:

 console.log(`${consistsOf}: ${lasagne[consistsOf]}`)
  // check here if  lasagne[consistsOf] is an object
  if (condition){
    for (let nestedObj in lasagne[consistsOf]) {
      console.log(`${lasagne.consistsOf[nestedObj]}`)
    }
  }