How to loop through a nested Object in javascript

November 29, 2023

I have the below object and I wanted to toggle all the boolen value inside of the object

{
    "2211284396232-5": {
        "2211284396232-5": false, 
        "644889430161": {
            "4812219518053": false, 
            "4812219518055": false,
            "4812219518063": false,
            "4812219518064": false,
            "4812219518069": false, 
            "644889430161": false
        }, 
    },
    
    "2211628865398-6": {
        "2211628865398-6": false, 
            "729563966440": {
                "5229922707373": false, 
                "729563966440": false
            }, 
    },
    
     "2212485574058-4": {
        "2212485574058-4": false, 
            "689399023594": {
                "5077186698704": false, 
                "5077186698712": false, 
                "689399023594": false
            }, 
    },
     
 }

I want to loop through this object and change all this false value to true value
How can I do this?

>Solution :

You can recursively examine each [key, value] entry in the object. You need to recurse when a property value is an object, and otherwise set the non-object properties to true.

const data = {"2211284396232-5":{"2211284396232-5":false,"644889430161":{"4812219518053":false,"4812219518055":false,"4812219518063":false,"4812219518064":false,"4812219518069":false,"644889430161":false}},"2211628865398-6":{"2211628865398-6":false,"729563966440":{"5229922707373":false,"729563966440":false}},"2212485574058-4":{"2212485574058-4":false,"689399023594":{"5077186698704":false,"5077186698712":false,"689399023594":false}}}

const f = obj => Object.entries(obj).forEach(([k, v]) =>
  typeof v === 'object' ? [k, f(v)] : obj[k] = true)

f(data)
console.log(data)

If you want to toggle the values instead of setting them to true, you can do this:

const data = {"2211284396232-5":{"2211284396232-5":false,"644889430161":{"4812219518053":false,"4812219518055":false,"4812219518063":false,"4812219518064":false,"4812219518069":false,"644889430161":false}},"2211628865398-6":{"2211628865398-6":false,"729563966440":{"5229922707373":false,"729563966440":false}},"2212485574058-4":{"2212485574058-4":false,"689399023594":{"5077186698704":false,"5077186698712":false,"689399023594":false}}}

const f = obj => Object.entries(obj).forEach(([k, v]) =>
  typeof v === 'object' ? [k, f(v)] : obj[k] = !obj[k])

f(data)
console.log(data)