javascript - AngularJS如何过滤数组中的元素

Question

我有这么大的

$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]
];

如何找到这个数组中的元素索引？我正在使用此代码，但它不起作用:

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

Answer 1

尝试以正确的方式过滤它，就像这个 demo fiddle :

查看

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

AngularJS 应用

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);
});

如果你想过滤不是精确值只需删除第三个true选项:

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