Input cursor position jumps to end with ng-change()

Question

I have an instance where I'm replacing the value of ngModel through ngChange. The cursor jumps to the end of the input field after each change (assuming because I'm assigning the result to the same $scope variable.)
I'd like to know how I can prevent this behavior?

  $scope.compute1 = 0;
  $scope.compute2 = 10;

  $scope.math = function() {
    $scope.compute1 = parseInt($scope.compute1);
    $scope.compute2 = parseInt($scope.compute2);

    $scope.compute1 = parseInt($scope.compute1);
  };

fiddle

Example of problem: if a user types in 1000. It's fine. But then if they want to go back and change the number to 156000 by just adding the 5 and 6, the 6 would actually be appended to the end: 15006.

Answer 1

Two suggestions:

1 Why not just use number input.

<div ng-app='myApp'>
    <div ng-controller="myCtrl">
    <input id="compute1" ng-model="compute.c1" ng-change="math()" type="number"/>
    <input id="compute2" ng-model="compute.c2" ng-change="math()" type="number"/>
  </div>
</div>

2 Two-Way databinding should always be used with the "dot" notation:

$scope.compute = {c1: 0, c2: 10};

$scope.math = function() {
  $scope.compute.c1 = parseInt($scope.compute.c1);
  $scope.compute.c2 = parseInt($scope.compute.c2);
};

and update your html accordingly to have ng-model="compute.c1" etc.