Simple xml entity encoder / decoder

xml_entity.js

function decodeEntity(str) {
  var names = {
    'nbsp': 160,
    'lt': 60,
    'gt': 62,
    'amp': 38,
    'cent': 162,
    'pound': 163,
    'yen': 164,
    'euro': 8364,
    'copy': 169,
    'reg:': 174
  };

  return ('' + str).replace(/&#?([\w\d]+);?/g, function(s, entity) {
    entity = (isNaN(entity)) ? names[entity] : entity;
      return String.fromCharCode(encodeURI(entity).replace('%'));
    });
  };
      
function encodeEntity(str) {
  return '&#' + encodeURI(str.charCodeAt(0)).replace('%') + ';';
}