CODEWITHSUNDEEP
javascript
Pearl
Pearl

Reputation: 9435

Replace array elements with object properties

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.

Upvotes: 3

Views: 75

Answers (4)

Nina Scholz
Nina Scholz

Reputation: 386570

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>');

Upvotes: 0

GG.
GG.

Reputation: 21844

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

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

DEMO

Upvotes: 0

Yuriy Yakym
Yuriy Yakym

Reputation: 3911

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));

Upvotes: 1

isvforall
isvforall

Reputation: 8926

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]
    });
}

Upvotes: 0

Related Questions