Is there a way to return the difference between two array present in a scope in angularjs
For example,
$scope.user1 = ['a', 'b'];
$scope.user2 = ['a', 'b', 'c', 'd'];
Difference of these two should give me an another as $scope.user3= ['c','d']
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It doesn't have anything to do with angular, you are asking about the basic array concepts.Mehran Hatami– Mehran Hatami2014-04-22 04:05:01 +00:00Commented Apr 22, 2014 at 4:05
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3 Answers
Underscore.js has the difference method for this.
http://underscorejs.org/#difference
$scope.user1 = ['a', 'b'];
$scope.user2 = ['a', 'b', 'c', 'd'];
$scope.user3 = _.difference($scope.user2, $scope.user1);
Comments
Angular can't do anything about it. Underscore.js is good but I prefer Lo-Dash
Lo-Dash is a utility library delivering consistency, customization, performance, & extras. And Lo-Dash can
$scope.user1 = ['a', 'b'];
$scope.user2 = ['a', 'b', 'c', 'd'];
$scope.user3 = _.difference($scope.user2, $scope.user1); // ['c','d']
Comments
There is nothing there in angularjs. You can look at underscore library difference method, or may create your own method to calculate the difference.
