Count number of same characters in a string and display in the array using javascript
function countChars(str) {
return str.toLowerCase().split('').reduce((total, letter) => {
total[letter] ? total[letter]++ : total[letter] = 1;
return total;
}, {});
}
console.log(countChars("Australia"));
//{ a: 3, u: 1, s: 1, t: 1, r: 1, l: 1, i: 1 }