Write a JavaScript program that returns the character that appears the most in a string.
Code:
function findMostFrequentCharacter(str) {
const charMap = {};
let result = '';
let resultCount = 0;
str.split('').forEach(char => {
charMap[char] = charMap[char] + 1 || 1;
if (charMap[char] > resultCount) {
result = char;
resultCount = charMap[char];
}
});
return result;
}
var result = findMostFrequentCharacter('helloworld');
console.log(result);