how to get the count of a letter's occurence in a string in javascritp code example

Example 1: count occurrences of character in string javascript

var temp = "This is a string.";
var count = (temp.match(/is/g) || []).length;
console.log(count);

Output: 2

Explaination : The g in the regular expression (short for global) says to search the whole string rather than just find the first occurrence. This matches 'is' twice.

Example 2: javascript count occurrences of letter in string

function count(str, find) {
    return (str.split(find)).length - 1;
}

count("Good", "o"); // 2

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Javascript Example

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