AngularJS如何过滤数组中的元素

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 });

Answer 1

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);

Answer 2

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);