Find difference between two strings in JavaScript

Question

I need to find difference between two strings.

const string1 = \'lebronjames\';
const string2 = \'lebronnjames\';

The expected output is t

Answer 1

this will return the first difference between two string

Like for lebronjames and lebronnjames is n

const string1 = 'lebronjames';
const string2 = 'lebronnjabes';


const findFirstDiff = (str1, str2) =>
  str2[[...str1].findIndex((el, index) => el !== str2[index])];


// equivalent of 

const findFirstDiff2 = function(str1, str2) {
  return str2[[...str1].findIndex(function(el, index) {
    return el !== str2[index]
  })];
}



console.log(findFirstDiff2(string1, string2));
console.log(findFirstDiff(string1, string2));