find how many of certain char there are in string node code example
Example 1: count value a to b character javascript
function count (string) {
var count = {};
string.split('').forEach(function(s) {
count[s] ? count[s]++ : count[s] = 1;
});
return count;
}
Example 2: count value a to b character javascript
let counter = str => {
return str.split('').reduce((total, letter) => {
total[letter] ? total[letter]++ : total[letter] = 1;
return total;
}, {});
};
counter("aabsssd"); // => { a: 2, b: 1, s: 3, d: 1 }