Retrieve the identification number for each item within my array

Question

Retrieve the identification number for each item within my array

I am working with an array of objects, each having a unique ID.

My goal is to find the index of each object in the array. I am currently using Angular, however, I am restricted from using $index for this particular task.

$scope.getObjectIndex = function(obj) {
        var theArray = _.flatten($scope.myObjects);
        var index;
          
        //Is there a way to search the array for my object using its ID?
        
        return index;   
      }

If you have any advice or suggestions, please feel free to share them. Your help would be greatly appreciated.

javascript angularjs

Answer 1

Answer №1

If you are utilizing ng-repeat for an array, you have the advantage of accessing the index.

<div ng-repeat="item in myCtrl.obj">
     <span>{{myCtrl.getObjectIndex(index)}}</span>
</div>

In your controller, you can then search through your obj and retrieve the corresponding id:

$scope.getObjectIndex = function(index){
    return $scope.myObjects[index].id;
}

Alternatively, if you prefer to use a different approach, you can search through your array using a for loop like so:

$scope.getObjectIndex = function(obj){
   for(var $i=0; $i<$scope.myObjects.length; $i++){
         if(obj.id === $scope.myObjects[$i].id){
             return $i;
         }
   }
}

Answer 2

If you are utilizing ng-repeat for an array, you have the advantage of accessing the index.

<div ng-repeat="item in myCtrl.obj">
     <span>{{myCtrl.getObjectIndex(index)}}</span>
</div>

In your controller, you can then search through your obj and retrieve the corresponding id:

$scope.getObjectIndex = function(index){
    return $scope.myObjects[index].id;
}

Alternatively, if you prefer to use a different approach, you can search through your array using a for loop like so:

$scope.getObjectIndex = function(obj){
   for(var $i=0; $i<$scope.myObjects.length; $i++){
         if(obj.id === $scope.myObjects[$i].id){
             return $i;
         }
   }
}

Retrieve the identification number for each item within my array

Answer №1

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