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arraysjsonnode.jssearchfind
Dndrhead
Dndrhead

Reputation: 35

Searching for data in arrays [Node.JS]

I have a question: (sorry for the bad formatting)

I have an array: 

[
    {
        "data": [
            [
                "kek",
                "lol"
            ],
            [
                "notkek",
                "notlol"
            ]
        ]
    }
]

If someone writes "kek" it should search it in the "data" array and return the "kek" position inside its array (["kek","lol"])

and its array position 

{
    "data": [
        [
            "kek",
            "lol"
         ]}

(in this case "data[0]")

If anybody knows the answer, please help me

Upvotes: 1

Views: 128

Answers (2)

Orelsanpls
Orelsanpls

Reputation: 23535

The method Array.findIndex and Array.includes may help you

const obj = {
  data: [
    [
      'kek',
      'lol'
    ],
    [
      'notkek',
      'notlol'
    ],
  ],
};

const keyToSearch = 'kek';

// We look for the key
const index = obj.data.findIndex(x => x.includes(keyToSearch));

if (index === -1) {
  console.log(`We didn't found ${keyToSearch}`);
} else {
  console.log(`We found ${keyToSearch} at index ${index}`);
}

Double index recuperation

const obj = {
  data: [
    [
      'kek',
      'lol'
    ],
    [
      'notkek',
      'notlol'
    ],
    [
      'notkek',
      'notlol',
      'otherstuff',
      'kek',
      'test',
    ],
  ],
};

const keyToSearch = 'kek';

const ret = obj.data.reduce((tmp, x, xi) => {
  // We look for the key
  const index = x.findIndex(y => y === keyToSearch);

  if (index === -1) return tmp;

  return [
    ...tmp,

    {
      absoluteIndex: xi,
      relativeIndex: index,
    },
  ];
}, []);


if (!ret.length) {
  console.log(`We didn't found ${keyToSearch}`);
} else {
  ret.forEach(({
    absoluteIndex,
    relativeIndex,
  }) => console.log(
    `We found ${keyToSearch} at`,
    `data index ${absoluteIndex}, in ${relativeIndex} position`,
  ));
}

Upvotes: 1

Steve Bohmbach
Steve Bohmbach

Reputation: 337

userInput = 'kek'
  let item = data.map((item, indx) => {
     item.includes(userInput) ? return({"indx":indx,"nestedIndex":item.indexOf(userInput)}) : null
   })

map over the data array and if the nested array had the item your searching for than return the index of the array and the index of the item with in that array

Upvotes: 0

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