How to parseInt in Angular.js

Question

Probably, it is the simplest thing but I couldn\'t parse a string to Int in angular..

What I am trying to do:

Answer 1

Option 1 (via controller):

angular.controller('numCtrl', function($scope, $window) {
   $scope.num = parseInt(num , 10);
}

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Option 2 (via custom filter):

app.filter('num', function() {
    return function(input) {
       return parseInt(input, 10);
    }
});

{{(num1 | num) + (num2 | num)}}

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Option 3 (via expression):

Declare this first in your controller:

$scope.parseInt = parseInt;

Then:

{{parseInt(num1)+parseInt(num2)}}

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Option 4 (from raina77ow)

{{(num1-0) + (num2-0)}}