Question 295661 in Javascript Question posted in
A very good W3school tutorial can be found here.

How to perform a Boolen test ona nested javascript object

I want to check if all value in the object are true, i want to return true if all are true but return false if any one is false

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

I know of every() method but my problem is the object are nested so i don’t know how to go about it. any help would be appreciated.

Tags:

2

Answers


  1. 0

    Write recursive tester. Loop all values and check if it’s boolean. If boolean – compare to true and return. If object – call itself once more.

    let data1 = {a: true, b: {c: true, d: {e: true}}};
let data2 = {a: true, b: {c: true, d: {e: false}}};
 
 function test(data, comparison) {
     if (typeof data == 'boolean') {
         return data === comparison;
     }
 
     for (let i in data) {
         if (!test(data[i], comparison)) {
             return false;
         }
     }
     
     return true;
 }
 
 console.log(test(data1, true), test(data2, true));
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  2. 0

    What you can do is recursively flatten the object to an array of the values. Then you can call every on the result to test your result.

    let data = {
    "2211284396232-5": {
        "2211284396232-5": true, 
        "644889430161": {
            "4812219518053": false, 
            "4812219518055": false,
            "4812219518063": false,
            "4812219518064": true,
            "4812219518069": false, 
            "644889430161": false
        }, 
    },
    
    "2211628865398-6": {
        "2211628865398-6": false, 
        "729563966440": {
            "5229922707373": false, 
            "729563966440": false
        }, 
    },
    
     "2212485574058-4": {
        "2212485574058-4": false, 
        "689399023594": {
            "5077186698704": true, 
            "5077186698712": false, 
            "689399023594": false
        }, 
    },
     
 };
 
function recurseFlat(obj){
  let acc = [];
  
  Object.keys(obj).map(function (k) {
    if(typeof obj[k] == 'object'){
      acc = acc.concat( recurseFlat(obj[k]) );
    }else{
      acc.push(obj[k]);
    }
  });
    
  return acc;
}

let flat = recurseFlat(data);

console.log('flatten: ', flat);

let result = flat.every((el) => el === true);

console.log('result: ', result);
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