string to sum

by Santosh Giridhara

JavaScript

var str = "(1,50),(3,50),(5,50)",
  sum = 1;
var strA = str.split('(').join('').split('),');
strA[strA.length - 1] = strA[strA.length - 1].replace(')', '');
for (i = 0; i < strA.length; i++) {
  var set = strA[i].split(',');
  if (!isNaN(set[1])) {
    sum = sum * set[1];
  }
}
console.log(sum);