Write a javascript count occurrences of character in string

Question

Write a javascript count occurrences of character in string

Answer 1

You could either use .match():

var string1 = "abcdefghijk";
var stringCount1 = string1.match(/a/g).length;

stringCount1 will return a value of 1.

Or, you could use .split():

var string2 = "aaaaaaaa";
var stringCount2 = string2.split("a").length - 1;

stringCount2 will return a value of 8.

.match() is preferred, since it takes a shorter amount of time to process.