Push element value from array of objects to a variable

Question

I have some data from a collection named \"service\" which has data like this:

let service_data = [
  {
    \"name\":\"Service 1\",
    \"price\":60,
    \"resou         


        

Answer 1

You can use flatMap

const extractFlat = (arr, key) => {
    return arr.flatMap(e => e[key]);
};

let service_data = [
  {
    "name":"Service 1",
    "price":60,
    "resource_group_ids" : 
         ["5d5e5dea99d9b75ff2f78dcd","5d5e85d329782914332368c8"]
  },
  {
    "name":"Service 2",
    "price":60,
    "resource_group_ids" : ["5d5e5dea99d9b75ff2f7cfe"]
  }
]

const resource_group_ids = extractFlat(service_data, 'resource_group_ids');
console.log(resource_group_ids);

or reduce on older environments

const extractFlat = (arr, key) => {
    return arr.reduce((acc, x) => acc.concat(x[key]), []);
};