What is the best way to show an empty div in this situation?

I am trying to showcase my array in my application.

Here is what I have:

JavaScript

$scope.array1 = [' ',' ',1,2,3,4,5];
$scope.array2 = [6,7,8,9,10,' ',' '];
$scope.array3 = [12,13,14,15,16,17];

HTML

<div ng-repeat="a1 in array1">
    {{a1}}
</div>

<div ng-repeat="a2 in array2">
    {{a2}}
</div>

<div ng-repeat="a3 in array1">
    {{a3}}
</div>

I had hoped to display empty divs using ng-repeat. However, an error occurred:

Duplicates in a repeater are not allowed. Use 'track by' expression to specify unique keys. Repeater: a1 in array1, Duplicate key: string: , Duplicate value: " "

Is there any way for me to show empty divs in this scenario? Thank you!

Answer №1

Take advantage of the following code snippet:

<div ng-repeat="a1 in array1 track by $index">
    {{a1}}
</div>

The usage of "track by $index" ensures that each element is tracked by its index rather than its value.

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