javascript - How to properly route to JSON entry in Express -

i building simple express-based api serve json data file. it's working fine i'd add functionality. json file of following format: (portions omitted)

[{   "id": "1",   "name": "george washington",   "page": "http://en.wikipedia.org/wiki/george_washington",   "date1": "30/04/1789",   "date2": "4/03/1797",   "party": "independent ",   "img": "georgewashington.jpg",   "thumb": "thmb_georgewashington.jpg",   "homestate": "virginia" } 

and here's snippet index.js express routing:

var express = require('express'); var app = express();  app.set('port', process.env.port || 3000);  var mydata = require('./data.json');  app.get('/api', function(req, res){ res.json(mydata); });  app.get('/api/:id', function(req, res){   res.json(mydata[req.params.id]);   }); 

a call /api gives whole dataset, while call /api/1 gives first entry, hoped. add third (or more route) allows user drill down specific items in json. example call to

https//<blah>/api/1/homestate 

would yield

"homestate": "virginia" 

can using parameters, or need iterate on json based on entered id? pointers code examples appreciated.

it can accomplished route parameters.

app.get('/api/:id/:property', function(req, res){   var response = {};   response[req.params.property] = mydata[req.params.id][req.params.property]   res.json(response); }); 

you going want add error handling make things more robust, otherwise app crash if route parameters aren't valid.