Sorting array of objects by property

Question

I have this collection from DataBase:

var items = [{ 'Name':'Michael', 'TypeId':1 }
        { 'Name':'Max', 'TypeId':1 }
        { 'Name':'Andre', 'TypeId':1 }
        { 'Name':'Georg', 'TypeId':2 }
        { 'Name':'Greg', 'TypeId':3 }
        { 'Name':'Mitchell', 'TypeId':2 }
        { 'Name':'Ptro', 'TypeId':1 }
        { 'Name':'Helga', 'TypeId':1 }
        { 'Name':'Seruin', 'TypeId':2 }
        { 'Name':'Ann', 'TypeId':3 }
        { 'Name':'Marta', 'TypeId':2 }]

I need to sort this items by TypeId increasing.

Like that:

var itemsSorted = [{ 'Name':'Michael', 'TypeId':1 }
        { 'Name':'Max', 'TypeId':1 }
        { 'Name':'Andre', 'TypeId':1 }
        { 'Name':'Ptro', 'TypeId':1 }
        { 'Name':'Helga', 'TypeId':1 }
        { 'Name':'Georg', 'TypeId':2 }
        { 'Name':'Mitchell', 'TypeId':2 }
        { 'Name':'Marta', 'TypeId':2 }]
        { 'Name':'Seruin', 'TypeId':2 }
        { 'Name':'Greg', 'TypeId':3 }
        { 'Name':'Ann', 'TypeId':3 }

Is there any built in function in JavaScript that can sort array of objects by property?

You can do that with Angular ng-repeat="items | orderBy: 'TypeId'" — elclanrs
– elclanrs, Commented Apr 16, 2016 at 18:03

Pankaj Parkar · Accepted Answer · 2018-04-14 06:22:56Z

40

You could use orderBy filter.

var itemsSorted  = $filter('orderBy')(items, 'TypeId')

On View

ng-repeat="item in items | orderBy: 'TypeId'"

By default filters are ascending(explicit would be +TypeId), you could use -TypeId to make it descending.

Additional Stuff

If you wanted to sort by multiple properties then do use array instead of string like ['TypeId', 'Name']

ng-repeat="item in items | orderBy: ['TypeId', 'Name']"

There is big performance benefit you get when you do manual filtering inside controller. where as filtering on view is slower as it evaluates ng-repeat express and bindings each time when digest cycle fire. Generally you won't see any performance hit in small collection, but in bigger collection you will see filtering on view will work slow.

edited Apr 14, 2018 at 6:22

answered Apr 16, 2016 at 18:03

Pankaj Parkar

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2 Comments

ivanivan Over a year ago

do you know if there is a performance difference between on view vs. in controller?

Pankaj Parkar Over a year ago

@ivanivan check updated answer, I added it for you :)

brk · Accepted Answer · 2016-04-16 18:07:55Z

7

You can use js sort function & ternary operator

var items = [{ 'Name':'Michael', 'TypeId':1 },
            { 'Name':'Max', 'TypeId':1 },
            { 'Name':'Andre', 'TypeId':1 },
            { 'Name':'Georg', 'TypeId':2 },
            { 'Name':'Greg', 'TypeId':3 },
            { 'Name':'Mitchell', 'TypeId':2 },
            { 'Name':'Ptro', 'TypeId':1 },
            { 'Name':'Helga', 'TypeId':1 },
            { 'Name':'Seruin', 'TypeId':2 },
            { 'Name':'Ann', 'TypeId':3 },
            { 'Name':'Marta', 'TypeId':2 }]
    var sortedArray = items.sort(function(a,b){
     return a.TypeId >b.TypeId?1:a.TypeId <b.TypeId?-1:0
    })
    console.log(sortedArray);

JSFIDDLE Example

answered Apr 16, 2016 at 18:07

brk

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Comments

Ori Drori · Accepted Answer · 2016-04-16 18:22:38Z

5

You can use Array.prototype.sort:

var items = [{ 'Name':'Michael', 'TypeId':1 },
        { 'Name':'Max', 'TypeId':1 },
        { 'Name':'Andre', 'TypeId':1 },
        { 'Name':'Georg', 'TypeId':2 },
        { 'Name':'Greg', 'TypeId':3 },
        { 'Name':'Mitchell', 'TypeId':2 },
        { 'Name':'Ptro', 'TypeId':1 },
        { 'Name':'Helga', 'TypeId':1 },
        { 'Name':'Seruin', 'TypeId':2 },
        { 'Name':'Ann', 'TypeId':3 },
        { 'Name':'Marta', 'TypeId':2 }];


items.sort(function(a, b) { return a.TypeId - b.TypeId; })

console.table(items);

document.getElementById('demo').innerHTML = JSON.stringify(items, null, 4);

<pre id="demo"></pre>

edited Apr 16, 2016 at 18:22

answered Apr 16, 2016 at 18:04

Ori Drori

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Comments

GG. · Accepted Answer · 2016-04-16 18:04:49Z

4

In a template:

<li ng-repeat="item in items | orderBy:'TypeId'">...</li>

In a controller/service:

vm.sortedItems = $filter('orderBy')(items, 'TypeId');

answered Apr 16, 2016 at 18:04

GG.

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1 Comment

Rayon Over a year ago

return a.TypeId - b.TypeId; would work as well! ;)

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