mapping through an array of object with different keys

Question

I have following array

const myArrayOfPurchasedCars = [{
    honda: {
      user: 'et',
      links: {
        img: {
          href: 'some0imghere'
        },
        year: 2010
      },
      {
        camry: {
          user: 'st',
          links: {
            img: {
              href: 'some0imghere'
            },
            year: 2014
          },
          {
            maxima: {
              user: 'lt',
              links: {
                img: {
                  href: 'some0imghere'
                },
                year: 2015
              },
              {
                optima: {
                  user: 'it',
                  links: {
                    img: {
                      href: 'some0imghere'
                    },
                    year: 2018
                  }
                ]

and I want to be able to access the user without having to say myarray[0].honda || myArray[1].camry.

Is there a way to do that with a map function?

Your data format seems to be incorrect due to missing closing brackets. Also do you want to get all users in the data — Shubham Khatri
– Shubham Khatri, Commented Oct 11, 2018 at 5:33
Are you intentionally nesting maxima inside of camry inside of honda inside of etc.? — Sam Gomena
– Sam Gomena, Commented Oct 11, 2018 at 5:35

dimvar · Accepted Answer · 2018-10-11 05:43:57Z

2

You can use map and Object.values.

myArrayOfPurchasedCars.map(function (car) { return Object.values(car)[0].user; });

answered Oct 11, 2018 at 5:43

dimvar

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Adrian Brand · Accepted Answer · 2018-10-11 05:41:26Z

const myArrayOfPurchasedCars = [
    {
      honda: {
        user: 'et',
        links: {
          img: {
            href: 'some0imghere'
          },
          year: 2010
        }
      }
    },
    {
      camry: {
        user: 'st',
        links: {
          img: {
            href: 'some0imghere'
          },
          year: 2014
        }
      }
    },
    {
      maxima: {
        user: 'lt',
        links: {
          img: {
            href: 'some0imghere'
          },
          year: 2015
        }
      }
    },
    {
      optima: {
        user: 'it',
        links: {
          img: {
            href: 'some0imghere'
          },
          year: 2018
        }
      }
    }
  ];
  
const users =  myArrayOfPurchasedCars.map(car => Object.getOwnPropertyNames(car).map(p => car[p].user)[0]);

console.log(users);

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