finding tags

gistfile1.txt

  // Search tags for [query], find matches, return results.
  suggestTags(query) {
   query = query.trim().toLowerCase();
    if (!query || query.length<2) {
      return null;
    }

    var goodMatches=[], partialMatches=[], allTags = db.tags;
    for (var x=0; x<allTags.length; ++x) {
      var pos=allTags[x].toLowerCase().indexOf(query);
      if(pos ==0) {
        goodMatches.push(x);
      }
      else if ( pos>0) {
        partialMatches.push(x);
      }
    }
    return this.makeTags(goodMatches.concat(partialMatches));
  }