How to show total count of elements based on two or more conditions in react js?-CodePudding

I am trying to show total count of participants based on two conditions: have "Pocu": "Da" and "Nume": "Contabilitate" from below nested array.

let popular = JSON.parse(`[
   {
     "id": "15f806ec-79cf-498f-8a4d-8bc8fdf8c43e",
     "Nume": "negrea",
     "Prenume": "ioana",
     "Pocu": "Da",
     "createdAt": "2022-04-27T13:17:05.000Z",
     "updatedAt": "2022-04-27T13:17:05.000Z",
     "deletedAt": null,
     "INDICATORI": [
       {
         "id": "068170b3-7995-41df-8fac-4f2bc577e2c6",
         "Nume": "4S110",
         "importHash": null         
       }
     ],
     "Cursuri": [{
         "id": "068170b3-7995-41df-8fac-4f2bc577e2c6",
         "Nume": "Contabilitate",
         "importHash": null
         }]
   }]`);
   

 
 const count = popular.reduce((total, participant) => total   Math.min (participant.Cursuri
  .filter(indicator => indicator.Nume === "Contabilitate").length, popular
  .filter(indicator => indicator.Pocu === "Da").length), 0)

 console.log(count);

output is : 85 it shoud be 20

any help is appreciated, thank you

CodePudding user response：

Here, you can use filter to put those items into the array that met these two conditions and then count the items in the array.

const count = popular.filter(item =>  item.Pocu === "Da" && item.Nume === "Contabilitate").length

CodePudding user response：

Please try that

const count = popular.filter(item => item.Pocu === "Da" && item.Cursuri.filter(c => c.Nume === "Contabilitate").length > 0).length;

console.log(count);

outputs 1

When searching in the nested Cursuri array we do it like below

if (item.Cursuri.filter(c => c.Nume === "Contabilitate").length > 0) {
}

or you can do it like below

if (item.Cursuri.some(c => c.Nume === "Contabilitate")) {
}

Fiddle

CodePudding user response：

You can simply achieve it by iterating the child objects with the help of Object.keys() along with Array.forEach() method.

Live Demo :

let popular = JSON.parse(`[
   {
     "id": "15f806ec-79cf-498f-8a4d-8bc8fdf8c43e",
     "Nume": "negrea",
     "Prenume": "ioana",
     "Pocu": "Da",
     "createdAt": "2022-04-27T13:17:05.000Z",
     "updatedAt": "2022-04-27T13:17:05.000Z",
     "deletedAt": null,
     "INDICATORI": [
       {
         "id": "068170b3-7995-41df-8fac-4f2bc577e2c6",
         "Nume": "4S110",
         "importHash": null         
       }
     ],
     "Cursuri": [{
         "id": "068170b3-7995-41df-8fac-4f2bc577e2c6",
         "Nume": "Contabilitate",
         "importHash": null
         }]
   }]`);
   
let count = 0;

popular.forEach(obj => {
    Object.keys(obj).forEach(key => {
    if (typeof obj[key] === 'object' && obj[key] !== null) {
        obj[key].forEach(participant => {
        if (obj.Pocu === 'Da' && participant.Nume === 'Contabilitate') {
            count  ;
        }
      })
    }
  });
});

console.log(count);