Calculating the variances between elements at corresponding positions within two arrays

I have two arrays filled with integers that are the same length.

Is there a way to calculate and find the difference between each index of these two arrays using JavaScript? Here's an example:

var firstArray = [1, 2, 3];
var secondArray = [4, 5, 1];

How can I determine the absolute difference between 1 - 4, 2 - 5, and 3 - 1? Any help would be appreciated. Thank you.

Answer №1

Check out the code snippets below:

New ES6 version

const a = [7, 8, 9];
const b = [2, 4, 6];

const output = a.map((element, index) => element - b[index]);

console.log(output) // [ 5, 4, 3 ]

Previous ES5 version

var a = [7, 8, 9];
var b = [2, 4, 6]; 

var output = a.map(function(element, index) {
  return element - b[index]; 
}); 

console.log(output) // [ 5, 4, 3 ]

Answer №2

const calculateResult = x => {
  return x.map((num, index) => num - y[index]);
}

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