Hide Value in input when it's zero in angular Js

Question

I have an angular object item.add_value = 0 bind into the

Answer 1

var app = angular.module('app', []);

app.controller('firstCtrl', function($scope) {

  $scope.item = {
    add_value: 0
  };

  $scope.$watch('item.add_value', function() {
    if ($scope.item.add_value === 0) {
      $scope.item.add_value = "";

    }

  });
});

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>

<div ng-app="app">
  <div ng-controller="firstCtrl">
    <input type="number" ng-model="item.add_value" ng-change="sumUp(item)" min="0" max="10000000000" />


  </div>
</div>