AngularJS filter includes negative number

Question

When I filter an array of object with a number something like:

$scope.users = [{name:'John', id:-1},
                         {name:'Mary', id:1},
                         {name:'Mike', id:2},
                         {name:'Adam', id:3}];

var selected = $filter('filter')($scope.users, {id: $scope.target});

If target = 1, the selected result will include John and Mary. But I only want the exactly same id which is Mary with id 1 to be included. Why does it include negative numbers? How can I prevent that?

lvarayut · Accepted Answer · 2015-04-13 08:15:41Z

4

You can set the third parameter of the filter which is the comparator to be true

$scope.users = [{name:'John', id:-1},
                         {name:'Mary', id:1},
                         {name:'Mike', id:2},
                         {name:'Adam', id:3}];

var selected = $filter('filter')($scope.users, {id: $scope.target}, true);

true is a shorthand for:

function(actual, expected) { 
    return angular.equals(actual, expected)
} // This is essentially strict comparison of expected and actual.

Plunkr.

edited Apr 13, 2015 at 8:15

answered Apr 13, 2015 at 8:07

lvarayut

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