Adding same property:value pair to multiple objects in array

Question

I have two arrays, which are almost identical in structure, except for one has a property:value pair on every object, and the other doesn't.

Newcastle Array (with `clubCode` property)

 [
            {"clubCode": "newcastle-united",
                "firstName": "Tim",
                "lastName": "Krul",
                "position": "gk"},

            {"clubCode": "newcastle-united",
                "firstName": "Rob",
                "lastName": "Elliot",
                "position": "gk"}
]

Arsenal Array (without `clubCode` property)

 [
            {"firstName": "Petr",
                "lastName": "Cech",
                "position": "gk",

            {"firstName": "David",
                "lastName": "Ospina",
                "position": "gk"}
]

Is it possible to push() the clubCode property to every object within the Arsenal array, so I don't have to manually add it to every single one?

...so each object starts with "clubCode": "arsenal".

Or if there is any other solution I'd love to hear it.

Any help will be appreciated. Thanks in advance.

on which basis you want to add it and how is your final data structure look? — RIYAJ KHAN
– RIYAJ KHAN, Commented Mar 3, 2016 at 18:36
I'm running AngularJS, and I'm accessing the $scope.arsenalSquad array by calling a JSON file, which is that same array. The array is returned as arsenalSquad.data. In my controller, I want to write the necessary code to return every object within that array with the property of clubCode and the corresponding value of arsenal. — Paulos3000
– Paulos3000, Commented Mar 3, 2016 at 19:34

caballerog · Accepted Answer · 2016-03-06 21:55:29Z

4

You can use Array.prototype.forEach over your data structure.

var x =  [
            {"firstName": "Petr",
                "lastName": "Cech",
                "position": "gk",
            },
            {"firstName": "David",
                "lastName": "Ospina",
                "position": "gk"}
         ]; 

x.forEach(function(e){e.clubCode='arsenal';})

edited Mar 6, 2016 at 21:55

answered Mar 3, 2016 at 18:26

caballerog

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Comments

Rajaprabhu Aravindasamy · Accepted Answer · 2016-03-03 18:21:40Z

1

Try to use Array.prototype.map() at this context,

arsenalArray = arsenalArray.map(function(itm){
  return (itm.clubCode = "arsenal", itm);
});

DEMO

answered Mar 3, 2016 at 18:21

Rajaprabhu Aravindasamy

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1 Comment

Paulos3000 Over a year ago

I tried this, but it didn't work. My problem is, I'm pulling the arsenalSquad array from a JSON file and the Service I'm using is returning it as arsenalSquad.data. So my final code looked like this: $scope.arsenalSquad.data = $scope.arsenalSquad.data.map(function(itm){ return (itm.clubCode = "arsenal", itm); }); Can you see what's wrong here?

Slava N. · Accepted Answer · 2016-03-03 18:26:16Z

0

    $scope.ar1 = [
            {"clubCode": "newcastle-united",
                "firstName": "Tim",
                "lastName": "Krul",
                "position": "gk"},

            {"clubCode": "newcastle-united",
                "firstName": "Rob",
                "lastName": "Elliot",
                "position": "gk"}
];

    $scope.ar1.forEach(function (value) {
      value.clubCode = "newcastle-united";
    });

    console.log($scope.ar1);

answered Mar 3, 2016 at 18:26

Slava N.

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Comments

Shashi · Accepted Answer · 2016-03-03 18:35:31Z

0

Its very easy using lodash.js

_.assign(arsenalArray, { clubCode: "arsenal" });

answered Mar 3, 2016 at 18:35

Shashi

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1 Comment

Paulos3000 Over a year ago

That does look easy. Would that work in AngularJS? My issue is I'm using a Service to pull the arsenalSquad array from a JSON file, and it's returning the array as arsenalSquad.data. So, in your case, would I write: _.assign(arsenalSquad.data, {clubCode: "arsenal" });?

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Newcastle Array (with `clubCode` property)

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