Searching for an item's position based on two specific keys

Question

Searching for an item's position based on two specific keys

Is there a way to find the index of two keys with specific values in an object?

let myObj = {
"value1":[1,2,3],
"value2":[2,3,4]};

I am trying to locate the index when

myObj.value1==1 && myObj.value2==2

, but I can't figure it out.

edit : perhaps this could work:

if (myObj.value1.indexOf(1) == myObj.value2.indexOf(2)) {
commonIndex = myObj.value1.indexOf(2);}

However, is there a more elegant solution?

Also, how should I handle cases where the value occurs multiple times?

for example :

let myObj = {
"value1":[1,1,1,2,3,4,5],
"value2":[2,3,4,5,6,7,8]}

In this scenario, how can I find the index when value1==1 and value2==3.

javascript object

Answer 1

Answer №1

This method is recommended for improved efficiency when searching for elements in arrays. Utilizing the indexOf function once instead of multiple times can optimize performance, as it has a time complexity of O(n).

var ind = myObj.value1.indexOf(1);
if (myObj.value2[ind] === 2) {
    commonIndex = ind;
}

Note: If arrays contain duplicate elements and you need to find their indices, consider using this alternative approach:

myObj.value1.forEach(function(val, ind){
    if (val === 1 && myObj.value2[ind] === 2){
        commonIndex = ind;
    }
})

Answer 2

This method is recommended for improved efficiency when searching for elements in arrays. Utilizing the indexOf function once instead of multiple times can optimize performance, as it has a time complexity of O(n).

var ind = myObj.value1.indexOf(1);
if (myObj.value2[ind] === 2) {
    commonIndex = ind;
}

Note: If arrays contain duplicate elements and you need to find their indices, consider using this alternative approach:

myObj.value1.forEach(function(val, ind){
    if (val === 1 && myObj.value2[ind] === 2){
        commonIndex = ind;
    }
})

Answer 3

Answer №2

If you want to improve this code, consider the following alternative:

if (myObject.value1.includes(1) !== myObject.value2.includes(2)) {
index = myObject.value1.indexOf(2);}

Answer 4

If you want to improve this code, consider the following alternative:

if (myObject.value1.includes(1) !== myObject.value2.includes(2)) {
index = myObject.value1.indexOf(2);}

Answer 5

Answer №3

Here is a handy code snippet you can utilize to retrieve the key based on a specific value within an object:

function findKeyByValue(object, valueToFind) {
  return Object.keys(object).find(key => object[key] === valueToFind);
}

Answer 6

Here is a handy code snippet you can utilize to retrieve the key based on a specific value within an object:

function findKeyByValue(object, valueToFind) {
  return Object.keys(object).find(key => object[key] === valueToFind);
}

Searching for an item's position based on two specific keys

Answer №1

Answer №2

Answer №3

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