Exploring an object to find the value of an array

Here is the object that I am working with:

var list = {
  nums: [
    [117],
    [108]
  ],
  numsset: [
    [2256, 2265],
    [234],
    [3445, 3442]
  ]
};

Imagine there is an input field on the page where a user can type a number. How can I search the object for that value and return the corresponding key?

Input      Returned
108        nums
3445       numsset
2872       
2265       numsset

I tried looping through the object but did not get the desired result.

Any assistance you can provide would be greatly appreciated. Thank you in advance.

javascriptarraysobject

Answer №1

Below is the code snippet that is functioning properly:

const data = {
  numbers: [
    [117],
    [108]
  ],
  numberSet: [
    [2256, 2265],
    [234],
    [3445, 3442]
  ]
};

const determineElement = (value) => {
  let keyFound = '';
  
  Object.keys(data).some((key) => {
    const array = data[key];
    
    const foundData = array.some(element => element.includes(value));
    
    if (foundData) {
    keyFound = key;
      return true;
    }
    
    return false;
  })
  
  return keyFound;
}

console.log(determineElement(2256));
console.log(determineElement(108));
console.log(determineElement(222));

Answer №2

One technique is to create a hash table and save the keys associated with the given numbers.

var list = { nums: [[117], [108]], numsset: [[2256, 2265], [234], [3445, 3442]] },
    keys = {};

Object.keys(list).forEach(key => list[key].forEach(arr => arr.forEach(value => keys[value] = key)));

console.log(keys);

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