CODEWITHSUNDEEP
javascriptarraysecmascript-6filter
Koala7
Koala7

Reputation: 1404

Adding Filtering in an array objects duplicated in existing method

I have the following array

 [{ id: 1,
    type: 'video',
    image: null,
    url: 'https://www.youtube.com/1'
  },
  { id: 2,
    type: 'video',
    image: null,
    url: 'https://www.youtube.com/2' 
  },
  { id: 3,
    type: 'image',
    image: 'https://example-1.url.webp'
  },
  { id: 4,
    type: 'image',
    image: 'https://example-2.url.jpg',
  },
  { id: 5,
    type: 'video',
    image: 'https://www.youtube.com/2',
  }   
]

I am already filtering all the items who are not webp format and the image is null

  const galleryFilter = gallery.filter(
    (item) => item?.image?.indexOf("webp") === -1 || item?.image === null
  );

As you can see there are 2 items (id 2 and id 5 ) with the same url, how can i also filter the item duplicated with the same url in the galleryFilter method ?

Upvotes: 0

Views: 46

Answers (2)

Siva Kondapi Venkata
Siva Kondapi Venkata

Reputation: 11001

Use filter and keep track of images with Set

const gallery = [
  { id: 1, type: "video", image: null, url: "https://www.youtube.com/1" },
  { id: 2, type: "video", image: null, url: "https://www.youtube.com/2" },
  { id: 3, type: "image", image: "https://example-1.url.webp" },
  { id: 4, type: "image", image: "https://example-2.url.jpg" },
  { id: 5, type: "video", image: "https://www.youtube.com/2" },
];

const set = new Set();

const galleryFilter = gallery.filter((item) => {
  if (
    (item?.image?.includes("webp") || item?.image === null) &&
    !set.has(item?.image)
  ) {
    set.add(item.image);
    return true;
  }
});

console.log(galleryFilter)

Upvotes: 0

Azad
Azad

Reputation: 5264

you can append another filter function to filter by image url, (I have added another object into your data set id: 6)

var gallery =  [{ id: 1,
    type: 'video',
    image: null,
    url: 'https://www.youtube.com/1'
  },
  { id: 2,
    type: 'video',
    image: null,
    url: 'https://www.youtube.com/2' 
  },
  { id: 3,
    type: 'image',
    image: 'https://example-1.url.webp'
  },
  { id: 4,
    type: 'image',
    image: 'https://example-2.url.jpg',
  },
  { id: 5,
    type: 'video',
    image: 'https://www.youtube.com/2',
  },
  { id: 6,
    type: 'video',
    image: 'https://www.youtube.com/2',
  }
];

var galleryFilter = gallery.filter( (item) => item?.image?.indexOf("webp") === -1 || item?.image !== null ).filter((item, i, arr) => i == arr.findIndex(e => e.image == item.image));

console.log(galleryFilter);

Upvotes: 1

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