Eliminate item from nested array when the array is devoid of elements in Typescript

Question

Eliminate item from nested array when the array is devoid of elements in Typescript

If the nested array is empty and I want to remove the object, how can I achieve this? For example, consider the following array:

pokemonGroups = [
    {
      name: 'Grass',
      pokemon: [
        'bulbasaur-0', 'Bulbasaur', 'oddish-1','Oddish','bellsprout-2', 'Bellsprout'
      ]
    },
    {
      name: 'Water',
      pokemon: [

      ]
    }]

In this case, we have an empty array:

{
   name: 'Water',
   pokemon: []
}

To remove this object and update the array to:

pokemonGroups = [
    {
      name: 'Grass',
      pokemon: [
        'bulbasaur-0', 'Bulbasaur', 'oddish-1','Oddish','bellsprout-2', 'Bellsprout'
      ]
    }
 ]

arrays angular typescript

Answer 1

Answer №1

To remove empty groups, you can utilize the filter method like so:

pokemonGroups = pokemonGroups.filter(group => group.pokemon.length !== 0);

Answer 2

To remove empty groups, you can utilize the filter method like so:

pokemonGroups = pokemonGroups.filter(group => group.pokemon.length !== 0);

Answer 3

Answer №2

To remove empty arrays within your array, you can loop through the array and use array.splice() method. Here's an example in JavaScript:

var pokemonGroups = [{
    name: 'Grass',
    pokemon: [
      'bulbasaur-0', 'Bulbasaur', 'oddish-1', 'Oddish', 'bellsprout-2', 'Bellsprout'
    ]
  },
  {
    name: 'Water',
    pokemon: [

    ]
  }
]

for (var i = 0; i < pokemonGroups.length; i++) {
  if (pokemonGroups[i]['pokemon'].length == 0) {
    pokemonGroups.splice(i, 1);
  }
}

console.log(pokemonGroups)

Answer 4

To remove empty arrays within your array, you can loop through the array and use array.splice() method. Here's an example in JavaScript:

var pokemonGroups = [{
    name: 'Grass',
    pokemon: [
      'bulbasaur-0', 'Bulbasaur', 'oddish-1', 'Oddish', 'bellsprout-2', 'Bellsprout'
    ]
  },
  {
    name: 'Water',
    pokemon: [

    ]
  }
]

for (var i = 0; i < pokemonGroups.length; i++) {
  if (pokemonGroups[i]['pokemon'].length == 0) {
    pokemonGroups.splice(i, 1);
  }
}

console.log(pokemonGroups)

Eliminate item from nested array when the array is devoid of elements in Typescript

Answer №1

Answer №2

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