1 var Commidity = require("./Model/commiditiesModel"); 2 function search(response,request,key){ 3     var search = new RegExp(key); 4   var query = { "title": search} 5   console.log(query); 6   Commidity.find(query,function(err, articles) { 7     if (err) return console.error(err); 8     console.dir(articles); 9     response.writeHead(200, {"Content-Type": "application/json"});10     response.write(JSON.stringify(articles));11     response.end();12   });13 }14 15 exports.search = search;