The object returns true when the specified condition matches the key within the object

Question

The object returns true when the specified condition matches the key within the object

I need assistance with a specific object query. I am looking to execute the filter function in order to retrieve a list of keys from an object where the condition is true, as shown below:

myObject = {
   key1: {
     name:"key1",
     select:true
   },
   key2: {
     name:"key2",
     select:false
   },
   key3: {
     name:"key3",
     select:true
   }
}

Due to certain requirements, I must now add a specific key and want to return an array containing only the keys with the value true.

arrayWantreturn = ["key1", "key3"]

Your assistance with this would be greatly appreciated.

javascript arrays object ecmascript-6 filter

Answer 1

Answer №1

To create a loop using the given object, follow this code:

var myObject = {
   key1: {
     name:"key1",
     select:true
   },
   key2: {
     name:"key2",
     select:false
   },
   key3: {
     name:"key3",
     select:true
   }
};

var arr = [];

for (var prop in myObject) {
    if (myObject[prop].select) {
        arr.push(myObject[prop].name);
    }
}

console.log(arr);

Answer 2

To create a loop using the given object, follow this code:

var myObject = {
   key1: {
     name:"key1",
     select:true
   },
   key2: {
     name:"key2",
     select:false
   },
   key3: {
     name:"key3",
     select:true
   }
};

var arr = [];

for (var prop in myObject) {
    if (myObject[prop].select) {
        arr.push(myObject[prop].name);
    }
}

console.log(arr);

Answer 3

Answer №2

If you're looking for a solution, you might want to give this code snippet a try:

const myObject = {
   key1: {
     name:"key1",
     select:true
   },
   key2: {
     name:"key2",
     select:false
   },
   key3: {
     name:"key3",
     select:true
   }
};

const result = Object.entries(myObject)
                     .filter(([k, v]) => v['select'])
                     .flatMap(e => e[1].name);

console.log(result);

Hopefully, this provides some clarity!

Answer 4

If you're looking for a solution, you might want to give this code snippet a try:

const myObject = {
   key1: {
     name:"key1",
     select:true
   },
   key2: {
     name:"key2",
     select:false
   },
   key3: {
     name:"key3",
     select:true
   }
};

const result = Object.entries(myObject)
                     .filter(([k, v]) => v['select'])
                     .flatMap(e => e[1].name);

console.log(result);

Hopefully, this provides some clarity!

Answer 5

Answer №3

To access the values of your object, utilize the Object.values() method. Filter out all objects with a `select` property set to `true` using the .filter() function. Then, use the .map() method to extract the `name` property from each remaining object.

const myObject = { key1: { name:"key1", select:true }, key2: { name:"key2", select:false }, key3: { name:"key3", select:true } };
const res = Object.values(myObject)
              .filter(({select}) => select)
              .map(({name}) => name); 
      
console.log(res);

This technique involves utilizing destructuring assignment to access the inner properties within the callback functions.

Answer 6

To access the values of your object, utilize the Object.values() method. Filter out all objects with a `select` property set to `true` using the .filter() function. Then, use the .map() method to extract the `name` property from each remaining object.

const myObject = { key1: { name:"key1", select:true }, key2: { name:"key2", select:false }, key3: { name:"key3", select:true } };
const res = Object.values(myObject)
              .filter(({select}) => select)
              .map(({name}) => name); 
      
console.log(res);

This technique involves utilizing destructuring assignment to access the inner properties within the callback functions.

The object returns true when the specified condition matches the key within the object

Answer №1

Answer №2

Answer №3

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