Make a blocking call to a function in Node.js required in this case?

Question

I am starting to learn node.js. I am stuck with a problem here. I am calling a weather service which returns a JSON(url below).

http://api.wunderground.com/api/Your_ke

Answer 1

You need to pass in a callback instead:

var http = require('http');

module.exports = function(url, cb) {
    http.get(url, function(res) {
        var body = '';

        res.on('data', function(chunk) {
            body += chunk;
        });

        res.on('end', function() {
            var resp, err;
            try {
              resp = JSON.parse(body);
            } catch (ex) {
              err = ex;
            }
            cb(err, resp);
        });

    }).on('error', function(e) {
          console.log("Got error: ", e);
          cb(e);
    });
};

Then use it like:

var relay = require('./getInfo');
var url = 'http://api.wunderground.com/api/Your_key/conditions/q/CA/San_Francisco.json';
var response;
relay(url, function(err, resp) {
  if (err) throw err; // TODO: handle better
  console.dir(resp);
});