Counting of comas

Question

hello
what is the code/script for counting the comas in a given lines

a,b,c,d,e,f,g,h,I,j

I want to count number of comas in the above line. what is the scrip(JavaScript) to count the comas

Answer 1

JavaScript:
alert(prompt("").split(",").length - 1);

Answer 2

try this...
var i="a,b,c,d,e";
alert(i.split(',').length-1);

Answer 3

console.log('a,b,c,d,e,f,g,h,I,j'.match(/,/g).length);