Sort an array by object field

Question

I have an array of objects

const myarray = [ { name: 'Alex', job: 'Doctor' }, { name: 'John', job: 'Taxi Driver' }, { name: 'Marc', job: 'Taxi Driver' }, ]

How can i, for each job, print the name of the job, then all the corresponding objects ?

For example I want to be able to display:

Doctor: Alex

Taxi driver: John, Marc

What does sorting have to do with this? What have you attempted. It is a simple loop and reading the properties of the object and outputting it in some way. — epascarello
– epascarello, Commented Jul 9, 2021 at 19:32
@epascarello I am sorry, my english is not very good i didn't know what other word i could use to explain the problem that's why i wrote and example of what i am trying to achieve. Your comment was not of much help but thank you anyway — Loo Gie
– Loo Gie, Commented Jul 10, 2021 at 1:41

Spectric · Accepted Answer · 2021-07-09 19:45:44Z

1

You can try something like this:

const myarray = [ { name: 'Alex', job: 'Doctor' }, { name: 'John', job: 'Taxi Driver' }, { name: 'Marc', job: 'Taxi Driver' } ]
const sorted = {}
myarray.forEach((e)=>{
  if(e.job in sorted){
    sorted[e.job].push(e.name);
  }else{
    sorted[e.job] = [e.name]
  }
})
console.log(sorted);

To print them in the format you want:

const myarray = [ { name: 'Alex', job: 'Doctor' }, { name: 'John', job: 'Taxi Driver' }, { name: 'Marc', job: 'Taxi Driver' } ]
const sorted = {}
myarray.forEach((e)=>{
  if(e.job in sorted){
    sorted[e.job].push(e.name);
  }else{
    sorted[e.job] = [e.name]
  }
})
for(const key in sorted){
  var str = key+': ';
  sorted[key].forEach(e=>str+=e+', ');
  console.log(str.slice(0, -2));
}

edited Jul 9, 2021 at 19:45

answered Jul 9, 2021 at 19:39

Spectric

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2 Comments

Loo Gie Over a year ago

Thank you ! That's exactly what i needed. Thanks for your help

Spectric Over a year ago

@LooGie No problem. Glad to help :)

Martes Carry · Accepted Answer · 2021-07-09 19:37:03Z

1

first of all create object which will store job like obj = {"Taxi driver": [],"Doctor": [] } and after you can pass array myarray.forEach(e => obj[e.job].append(e.name)) after just manipulate with object. Best regards

answered Jul 9, 2021 at 19:37

Martes Carry

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Comments

Dharman · Accepted Answer · 2021-07-09 19:44:57Z

1

It returns an object with the result you want

const myarray = [ { name: 'Alex', job: 'Doctor' }, { name: 'John', job: 'Taxi Driver' }, { name: 'Marc', job: 'Taxi Driver' }, ]

function getJobs() {
  let result = {};
  myarray.forEach(function t(e) {
    if (!result.hasOwnProperty(e.job))  result[e.job] = [];
    result[e.job].push(e.name);
  });
  return result;
}

console.log(getJobs());

edited Jul 9, 2021 at 19:44

Dharman♦

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answered Jul 9, 2021 at 19:39

AlexSp3

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