如何根據反應js中的兩個條件顯示元素總數？-有解無憂

我試圖根據兩個條件顯示參與者的總數：擁有"Nume": "4S110" 和"Nume": "Contabilitate"來自INDICATORI陣列和Cursuri陣列。

將它們顯示為

const cont = popular.reduce((total, participant) => total   participant.Cursuri
  .filter(curs => curs.Nume === "Contabilitate") && participant.INDICATORI
  .filter(indicator => indicator.Nume === "4S110").length,0)

output is : 0, it should be 1


api is:

```
"rows": [
   {
     "id": "15f806ec-79cf-498f-8a4d-8bc8fdf8c43e",
     "Nume": "negrea",
     "Prenume": "ioana",
     "Varsta": 40,
     "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,
         ]
   },

uj5u.com熱心網友回復：

該.filter()函式回傳一個陣列，因此您需要添加.length. Math.min()如果您只想計算一次這樣的人（必須在兩個專案中都有一個條目），可以提供幫助。

let popular = JSON.parse(`[
   {
     "id": "15f806ec-79cf-498f-8a4d-8bc8fdf8c43e",
     "Nume": "negrea",
     "Prenume": "ioana",
     "Varsta": 40,
     "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, participant.INDICATORI
  .filter(indicator => indicator.Nume === "4S110").length), 0)

 console.log(count);

轉載請註明出處，本文鏈接：https://www.uj5u.com/caozuo/478577.html

標籤：数组反应目的筛选减少

上一篇：如果當前值更接近現在日期，如何找到物件陣列？

下一篇：在陣列中的物件值后添加逗號