Convert string, number to boolean value

string-to-boolean.js

function cleanBooleanParam(value) {
  switch(value.toString().toLowerCase()) {
    case "true":
    case "on":
    case "yes":
    case "1":
      return true;
    case "false":
    case "off":
    case "no":
    case "0":
      return false;
    default:
      return value;
  }
}