AngularJS disable dropdown option which previously selected

Answer 1

var demoApp = angular.module('myApp', []);
demoApp.controller('QaController', function($scope, $http) {
    $scope.loopData = [];

   $scope.loopData = [{ 
        model: null,
        question : "",
        availableOptions: [
            {id: '1', name: 'What is your childhood name?',disable : false},
            {id: '2', name: "What is your first school?",disable : false},
            {id: '3', name: "What is your first job place?",disable : false},
            {id: '4', name: "What is your pet name?",disable : false}
        ]
    },{ 
        model: null,
        question : "",
        availableOptions: [
            {id: '1', name: 'What is your childhood name?',disable : false},
            {id: '2', name: "What is your first school?",disable : false},
            {id: '3', name: "What is your first job place?",disable : false},
            {id: '4', name: "What is your pet name?",disable : false}
        ]
    }]
 
    $scope.changItem = function(index,_id){ 
      $scope.loopData = $scope.loopData.map(function(obj,i){
      debugger
        if(i > index){
          obj.availableOptions.map(function(item){
            if(item.id == _id ){
              item.disable = true
            }else{
              item.disable = false
            }
            return item
          })
        }else{ debugger
          obj.availableOptions.map(function(item){
          debugger
            if(item.id == _id ){
              item.disable = true
            }else{
              item.disable = false
            }
            return item
          }) 
        }
        return obj
      });
    }
    $scope.submit = function() {
        $scope.result = $scope.loopData;
    };

});

        

            

                
 
                    
Q. {{$index + 1}}
{{x.modelVal}}
 
   Select Question
   {{option.name}}

                    
                    

                
                Submit
            

            

                
{{result | json}}