My custom String object methods

String.stripMoneyFormat.js

function stripMoneyFormat(string, currency) {
  currency = currency || '$';

  var regex = {
        moneys: new RegExp('[\\'+currency+'\,]', 'g')
      }
    ;

  if (typeof(string) == "string") {
    return parseFloat(string.replace(regex.moneys, ''))toFixed(2);
  } else {
    console.error(string + ' is not a string!!!');
    return null;
  }
}