AngularJS how to filter an element in an array

Question

I have this massive

$scope.arrVaritions = [
    [1, 2, 3], 
    [4, 5, 6], 
    [7, 8, 9], 
    [1, 4, 7], 
    [2, 5, 8], 
    [3, 6, 9], 
    [1, 5, 9], 
    [3, 5, 7]
];

How can I find an element index in this array? I'm use this code, but it does not work:

$scope.elementId = 1;    
$filter('filter')($scope.arrVaritions, { $scope.elementId });

$filter('filter')($scope.arrVaritions, { id: $scope.elementId }); - it works, but i have not "ID" — Afimidas
– Afimidas, Commented Mar 12, 2017 at 10:30

lin · Accepted Answer · 2017-03-12 10:44:04Z

2

Try filter it in the right way like in this demo fiddle:

View

<div ng-controller="MyCtrl">
  {{filtered}}
</div>

AngularJS application

var myApp = angular.module('myApp',[]);

myApp.controller('MyCtrl', function ($scope, $filter) {
    $scope.arrVaritions = [
        [1, 2, 3], 
        [4, 5, 6], 
        [7, 8, 9], 
        [1, 4, 7], 
        [2, 5, 8], 
        [3, 6, 9], 
        [1, 5, 9], 
        [3, 5, 7]
    ];

    $scope.elementId = 1;
    $scope.filtered = $filter('filter')($scope.arrVaritions, $scope.elementId, true);
});

If you want to filter not the exact value just remove the 3rd true option:

$scope.filtered = $filter('filter')($scope.arrVaritions, $scope.elementId);

edited Mar 12, 2017 at 10:44

answered Mar 12, 2017 at 10:32

lin

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3 Comments

Pankaj Parkar Over a year ago

Exact same time :) 2017-03-12 10:32:10Z

lin Over a year ago

Yes, I was laughing loud in that moment. =)

Pankaj Parkar Over a year ago

upvoted! but I covered corner case :) which I faced usually while working on projects :)

Pankaj Parkar · Accepted Answer · 2017-03-12 10:32:10Z

1

It should have only $scope.elementId instead of object, and 3rd option true to match exact value. Otherwise without true if elementId will consider 10, 11, 100, etc. values (it will do contains check).

$filter('filter')($scope.arrVaritions, $scope.elementId, true);

answered Mar 12, 2017 at 10:32

Pankaj Parkar

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