Develop a custom function that can take in a two-dimensional array and produce an output displaying all the key-value pairs within an object

Question

Develop a custom function that can take in a two-dimensional array and produce an output displaying all the key-value pairs within an object

This is a project task. Please refrain from down voting. Everyone starts somewhere, and we all have unique ways of learning.

The requirement is for the function to accept a 2D array (an array of pairs) in this specific format:

array = [[1, 2], [3, 4], ['nice', 'free'], [5, 6]];

The array can vary in length, but must always be in pairs as demonstrated above.

The function should return: {1:2, 3:4, nice: 'free', 5:6}

Here is the code snippet I've come up with so far:

function keyValue(array) {
    for (var i = 0; i<array.length; i++){
        var pairs = {
            [array[i][0]]: array[i][1]
        };
        console.log(pairs);
    }
}

keyValue([[1, 2], [3, 4], ['nice', 'free'], [5, 6]]);

The output displays: keyValue

(array)'returns':Object {1: 2}, Object {3: 4},  Object {nice: 'free'}, Object {5: 6}

'console.log' shows all key-value pairs, while 'return' only presents the first pair; for example {1:2}

I am unsure whether I created multiple objects with their own key-values, hence why 'return' only showed one pair

Alternatively, if I indeed created just one object, I need to utilize the 'return' function to display the complete set of key-values within that object. Any assistance would be greatly appreciated. Thank you in advance.

javascript arrays object

Answer 1

Answer №1

One approach is to initialize an empty object and then add properties for each item in the array.

Additionally, it's recommended to define all variables at the beginning of your code.

In simplified pseudocode, the process can be outlined as follows:

initialize empty object

loop through array
    add new key/value pair to object

return resulting object

Answer 2

One approach is to initialize an empty object and then add properties for each item in the array.

Additionally, it's recommended to define all variables at the beginning of your code.

In simplified pseudocode, the process can be outlined as follows:

initialize empty object

loop through array
    add new key/value pair to object

return resulting object

Answer 3

Answer №2

This solution is quite straightforward:

function createKeyValue(array) {
var obj={};
for (let index = 0; index < array.length; index++){
obj[array[index][0]] = array[index][1];       
}
 return obj;
}

createKeyValue([[1, 2], [3, 4], ['hello', 'world'], [5, 6]]);

All you need to do is iterate through the array and assign key-value pairs to an object...

Answer 4

This solution is quite straightforward:

function createKeyValue(array) {
var obj={};
for (let index = 0; index < array.length; index++){
obj[array[index][0]] = array[index][1];       
}
 return obj;
}

createKeyValue([[1, 2], [3, 4], ['hello', 'world'], [5, 6]]);

All you need to do is iterate through the array and assign key-value pairs to an object...

Answer 5

Answer №3

When you create new objects, ensure they are all separate objects. To achieve this, push each pair object into an array and then retrieve the first object using Array[0]. Here is a sample implementation:

function extractPair(array) {
var result=[];
    for (var index = 0; index<array.length; index++){
    pairs = {
[array[index][0]]: array[index][1]
    };
        result.push(pairs); // add to array
}
  console.log(result[0]) // get the first object
}

extractPair([[1, 2], [3, 4], ['great', 'awesome'], [5, 6]]);

Answer 6

When you create new objects, ensure they are all separate objects. To achieve this, push each pair object into an array and then retrieve the first object using Array[0]. Here is a sample implementation:

function extractPair(array) {
var result=[];
    for (var index = 0; index<array.length; index++){
    pairs = {
[array[index][0]]: array[index][1]
    };
        result.push(pairs); // add to array
}
  console.log(result[0]) // get the first object
}

extractPair([[1, 2], [3, 4], ['great', 'awesome'], [5, 6]]);

Develop a custom function that can take in a two-dimensional array and produce an output displaying all the key-value pairs within an object

Answer №1

Answer №2

Answer №3

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