how to create a character count in javascript code example

Example 1: js character certain count

var str = "Hello Lewes";
var ch = 'e';
 
var count = str.split("e").length - 1;
console.log(count);
 
/*
    Output: 3
*/

Example 2: javascript count character in string

var str = "Hello World!";
var n = str.length;