angular.copy is Not Copying Objects having sub objects or array

Question

I am using angularjs 1.5 and in that trying to copy one object in another variable. To copy the variable, I am using angular.copy() function . The destination variable is not getting all the values which is there in source.

Below is my code

$scope.searchCond = {
    group_id:[],
    sections:[]      
};
for(var i=1;i<5;i++)  {   
   $scope.searchCond.sections[i+"_sec"]=[];
   $scope.searchCond.sections[i+"_sec"]["section_id"]=[];
   $scope.searchCond.sections[i+"_sec"]["section_id"].push(i);
};
var tmpVar = angular.copy($scope.searchCond);
console.log(tmpVar);
console.log($scope.searchCond);

Output of both the console are given below

OutPut of $scope.searchCond

{group_id: Array(0), sections: Array(0)}
group_id:[]
sections:Array(0)
1_sec:[section_id: Array(1)]
2_sec:[section_id: Array(1)]
3_sec:[section_id: Array(1)]
4_sec:[section_id: Array(1)]

OutPut of tmpVar

{group_id: Array(0), sections: Array(0)}
group_id:[]
sections:Array(0)
length:0

tmpVar is not copying sections(1_sec,2_sec) from the source object $scope.searchCond

Is there any solution for this problem?

Answer 1

$scope.searchCond = {
    group_id:[],
    ̶s̶e̶c̶t̶i̶o̶n̶s̶:̶[̶]̶
    sections:{}      
};
for(var i=1;i<5;i++)  {   
   ̶$̶s̶c̶o̶p̶e̶.̶s̶e̶a̶r̶c̶h̶C̶o̶n̶d̶.̶s̶e̶c̶t̶i̶o̶n̶s̶[̶i̶+̶"̶_̶s̶e̶c̶"̶]̶=̶[̶]̶;̶
   $scope.searchCond.sections[i+"_sec"]={};
   $scope.searchCond.sections[i+"_sec"]["section_id"]=[];
   $scope.searchCond.sections[i+"_sec"]["section_id"].push(i);
};
var tmpVar = angular.copy($scope.searchCond);
console.log(tmpVar);
console.log($scope.searchCond);

The angular.copy function only copies the numeric properties of an array. If you want the property names to be non-numeric, initialize it to be an object.