code: function find(datas, context) {
      if (!datas[0][0]) return [];
      var results = [],
        notNullResult = 0;
  
      for (var i = 0, len = datas.length; i < len; i++) {
        var data = datas[i],
          dlen = data.length,
          last = data[dlen - 1],
          result = getTargets(data, context);
  
        if (result && result.length) {notNullResult++;};
        if (!results) results = result;
        else results =results.concat(result);
      }
      clearNthPositionCache();//清理
      if (notNullResult > 1) uniqueSort(results);
      return results;
    }
docs: API : find (private) ------------- 根据parse后的数据进行节点查找 options: 1. parsed.data  parse数据为一数组 2. node         context节点 事实上没有data这个单词，我这里算是自定了这个单词 datas : [data,data] data : [datum, datum] datum: {tag:"*"....etc}