code: function (source) {
  
                  var str = String(source)
                      .replace(/&quot;/g, '"')
                      .replace(/&lt;/g, '<')
                      .replace(/&gt;/g, '>')
                      .replace(/&amp;/g, '&');
  
                  // 处理转义的中文和实体字符
                  return str.replace(/&#([\d]+);/g, function ($0, $1) {
                      return String.fromCharCode(parseInt($1, 10));
                  });
              }
docs: HTML解码字符串
  
  @param {string} source 源字符串
  @return {string}