AngularJs - check if value exists in array object

Question

var SelectedOptionId = 957;

$scope.array = [{"957":"1269"},{"958":"1265"},{"956":"1259"},{"957":"1269"},{"947":"1267"}]

Is there a way of checking if a value exists in an that kind of array objects. I am using Angular and underscore.

I have tried all this -

if ($scope.array.indexOf(SelectedOptionId) === -1) {console.log('already exists')}

and

console.log($scope.array.hasOwnProperty(SelectedOptionId)); //returns false

and

console.log(_.has($scope.array, SelectedOptionId)); //returns false 

Solution

You could use Array#some and check with in operator.

exists = $scope.array.some(function (o) {
    return SelectedOptionId in o;
});

Comments

[Rajesh]

I have learned more just by reading your answers than googling. Thanks for being awesome. :-)

[Kunal arora]

How to do it for the values i.e.- instead of 957 I want to do it for 1269

[Nina Scholz]

for values, you need to iterate over the keys of the object, and check against, like return Object.keys(o).some(function (k) { return o[k] === value; });