How to make in JavaScript a code that specifies the number of each character?

Question

for example: paragraph
a 3
b 0
c 0
d 0
e 0
f 0
g 1
h 1

and so on...

Answer 1

function charMatch() {
var ch = "abcdefghijklmnopqrstuvwxyz-&"
var s = str.toLowerCase();
for(var i=0; i<ch.length; i++) {
var re = RegExp(ch[i], "g");
var out = (s.match(re) || []).length;
console.log(ch[i] + out);
}
}

https://code.sololearn.com/WJu26S6SEjOr/?ref=app