javascript figure out the number of letters in string 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
const recorrences = ['a', 'b', 'c', 'a', 'b','a']
.map(i => !!~i.indexOf('a'))
.filter(i => i)
.length;
console.log(`recorrences ${recorrences}`)
//recorrences 3