How to store number of object element of array in another array?

Question

im trying to store some object element from one array to another so lets say i have this array of objects

var Array = [{name:'Fadi'},{name:'Joseph'},{name:'Salim'},{name:'Tony'}];

and i want to store the first two object in this array to another array so it would like be

var SubArray =[{name:'Fadi'},{name:'Joseph'}];

thanks in advance for any help.

Ok, so SubArray = [Array[0],Array[1]], else you need to define you question a lot better. — Matt Burland
– Matt Burland, Commented Oct 10, 2014 at 15:25

antyrat · Accepted Answer · 2014-10-10 15:25:44Z

4

You can use slice method for this:

var SubArray = Array.slice(0,2);

Please note that Array is reserved JS global object. You need to use different name for that variable. So your code should be for example:

var MyArray = [{name:'Fadi'},{name:'Joseph'},{name:'Salim'},{name:'Tony'}];
var SubArray = MyArray.slice(0,2);

answered Oct 10, 2014 at 15:25

antyrat

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3 Comments

dusky Over a year ago

+1 for using a standard built-in function. MDN has a good documentation on Array and JS in general.

Fadi Over a year ago

@antyrat if i want to add some new property like number to the sliced object can i do it directly with the slice or just loop on each object in the SubArray and add the new property.

antyrat Over a year ago

Probably you need to loop

Community · Accepted Answer · 2017-05-23 12:06:36Z

0

If you need conditional logic you want Array.filter(). If you know you always want the items by index then use slice as in antyrat's answer.

var originalArray = [{name:'Fadi'},{name:'Joseph'},{name:'Salim'},{name:'Tony'}];
var subArray = originalArray.filter(function(obj,index) {
    return obj.name=="Fadi" || obj.name=="Joseph";
})

edited May 23, 2017 at 12:06

CommunityBot

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answered Oct 10, 2014 at 15:27

Dave

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