function solution(s1, s2) {
let count = 0;
s1 = s1.split('');
s2 = s2.split('');
s1.forEach((e) => {
if (s2.includes(e)) {
count++;
s2.splice(s2.indexOf(e), 1);
}
});
return count;
}
var str = "Hello Lewes";
var ch = 'e';
var count = str.split("e").length - 1;
console.log(count);
/*
Output: 3
*/