Replace array elements with object properties

Question

My object

var person = [{ FIrstName: "", LastName: "", MiddleName: "" }];

My data

var names = [
    "Steve", "Mark", "John",     // person 1
    "James", "Andrew", "wells",  // person 2
    "Clarke", "Finche", "Gomes"  // person 3
];

So I want to push the names array in person object.

$(names).each(function (index, item) {
    //Here I need to push the values
});

As you can see I don't have separate arrays for last names and middle names.

I want my output as :

[
    { "FIrstName": "Steve", "LastName": "Mark", "MiddleName": "John" },
    { "FIrstName": "James", "LastName": "Andrew", "MiddleName": "wells" },
    { "FIrstName": "Clarke", "LastName": "Finche", "MiddleName": "Gomes" }
]

Please assist me.

It's not clear what the array should look like after processing — Andy
– Andy, Commented Apr 17, 2016 at 15:42
Suggest you fix the source of names array. Where does it come from? — charlietfl
– charlietfl, Commented Apr 17, 2016 at 15:56

Yuriy Yakym · Accepted Answer · 2016-04-17 16:11:53Z

1

Here is what you want to achieve.

var names = ["Steve","Mark","John","James","Andrew", "wells","Clarke","Finche","Gomes"];
var person = [];

for(var i=0; i<names.length; i+=3) {
    person.push({
    	FIrstName: names[i],
    	LastName: names[i+1],
    	MiddleName: names[i+2]
    });
}

document.write(JSON.stringify(person));

Also you can firstly split you array to array of chunks..

var names = ["Steve","Mark","John","James","Andrew", "wells","Clarke","Finche","Gomes"];
var chunks = [];

while(names.length) {
	chunks.push(names.splice(0, 3));
}

var result = chunks.map(function(person) {
	return {
    	FIrstName: person[0],
    	LastName: person[1],
    	MiddleName: person[2]
    }
});

document.write(JSON.stringify(result));

edited Apr 17, 2016 at 16:11

answered Apr 17, 2016 at 15:43

Yuriy Yakym

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4 Comments

Pearl Over a year ago

Thanks alot. But I want Last Name and Middle Name as well.

Yuriy Yakym Over a year ago

Do you have separate arrays with last names and middle names?

Pearl Over a year ago

No, thats my problem.

charlietfl Over a year ago

@Pearl then you haven't provided a proper problem description in the question. We can't guess what you need or what you have

isvforall · Accepted Answer · 2016-04-17 16:00:05Z

0

Use for loop with increment i by 3

var names = ["Steve", "Mark", "John", "James", "Andrew", "wells", "Clarke", "Finche", "Gomes"];

var person = [];

for (var i = 0; i < names.length; i += 3) {
    person.push({
        FIrstName: names[i],
        LastName: names[i + 1],
        MiddleName: names[i + 2]
    });
}

answered Apr 17, 2016 at 16:00

isvforall

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Comments

GG. · Accepted Answer · 2016-04-17 16:22:54Z

0

Could be off-topic, but if you consider using Lodash:

_.map(_.chunk(names, 3), function (person) {
    return _.zipObject(['FirstName', 'LastName', 'MiddleName'], person);
});

DEMO

answered Apr 17, 2016 at 16:22

GG.

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Comments

Nina Scholz · Accepted Answer · 2016-04-17 16:39:56Z

0

This is a small proposal with Array#reduce().

var keys = ['FirstName', 'LastName', 'MiddleName'],
    names = ["Steve", "Mark", "John", "James", "Andrew", "wells", "Clarke", "Finche", "Gomes"],
    persons = names.reduce(function (r, a, i) {
        var index = Math.floor(i / 3);
        r[index] = r[index] || {};
        r[index][keys[i % 3]] = a;
        return r;
    }, []);

document.write('<pre>' + JSON.stringify(persons, 0, 4) + '</pre>');

answered Apr 17, 2016 at 16:39

Nina Scholz

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