JavaScript Remove Object From Array Based on Child Property

Question

Using vanilla JavaScript (supported by the latest version of Chrome, don't worry about IE) and/or lodash/underscore but no jQuery how can I take this array:

[
  {
    "id": 1,
    "places": {
      "city": "boston"
    }
  },
  {
    "id": 2,
    "places": {
      "city": "new york"
    }
  }
]

...and remove the entire object that has a city of "boston":

[
  {
    "id": 2,
    "places": {
      "city": "new york"
    }
  }
]

Please keep in mind this array could have dozens of entries. Thank you!

http://plnkr.co/edit/JW3zd6A7OcmihM4CTh1D?p=preview

nersoh · Accepted Answer · 2015-09-10 21:42:08Z

4

One of the ways you can do this is by using filter. For example:

var dataWithoutBoston = data.filter(function (el) {
  return el.places.city !== "boston";
});

And to make it reusable, you can have a function like this:

function removeFromCity(data, name) {
  var result = data.filter(function (el) {
    return el.places.city !== name;
  });
  return result;
};

edited Sep 10, 2015 at 21:42

answered Sep 10, 2015 at 21:32

nersoh

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1 Comment

maioman Over a year ago

wrap your function and you can set the city to select as argument

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