根据 Key 和 values 从数组中提取值

Question

I have a requirement to extract values from the array according to the occupation into different excel sheets.

  { age: 22, name: "Jack McDonald", occupation: "Developer" },
  { age: 22, name: "Bridget Williams", occupation: "Developer" },
  { age: 22, name: "Nathan Thomas", occupation: "Developer" },
  { age: 23, name: "Olivia Beck", occupation: "Tester" },
  { age: 24, name: "Derek wilson", occupation: "Tester" }
  { age: 24, name: "Derek wilson", occupation: "BA" }
  { age: 24, name: "Derek wilson", occupation: "IT" }
  { age: 24, name: "Derek wilson", occupation: "IT" }

I want an excel sheet with the name Developer.csv and should only contain Developer items likewise, I need another excel sheet with the name Tester.csv and should only contain tester items and so on

I am stuck here. please help

Answer 1

Suppose this is an array you can use Array.filter to match all the needed occupations. Here is a sample code based on the info you provided

 const a = [{ age: 22, name: "Jack McDonald", occupation: "Developer" }, { age: 22, name: "Bridget Williams", occupation: "Developer" }, { age: 22, name: "Nathan Thomas", occupation: "Developer" }, { age: 23, name: "Olivia Beck", occupation: "Tester" }, { age: 24, name: "Derek wilson", occupation: "Tester" }, { age: 24, name: "Derek wilson", occupation: "BA" }, { age: 24, name: "Derek wilson", occupation: "IT" }, { age: 24, name: "Derek wilson", occupation: "IT" }] const developers = a.filter(x=>x.occupation === 'Developer') const testers = a.filter(x=>x.occupation === 'Tester') console.log(developers) console.log(testers)

Answer 2

As I see your problem has 2 parts:

• First you need to know how many occupation are without duplicates

const noDupOccup = [...new Set(arr.map(o=>o.occupation))]

• Then you need a filtered array for each occupation

for (occ on noDupOccup){
  const cvs = arr.filter(o=>o.occupation === occ)
   // save your 'occ'.cvs here with cvs data
}