javascript urlencode urldecode

function urlencode(str) {
  str = (str + '')
    .toString();

  return encodeURIComponent(str)
    .replace(/!/g, '%21')
    .replace(/'/g, '%27')
    .replace(/\(/g, '%28')
    .
  replace(/\)/g, '%29')
    .replace(/\*/g, '%2A')
    .replace(/%20/g, '+');
}


function urldecode(str) {
  return decodeURIComponent((str + '')
    .replace(/%(?![\da-f]{2})/gi, function() {
      return '%25';
    })
    .replace(/\+/g, '%20'));
}