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 can take a callback in your module function to return the result.

module.exports = function (url, onsuccess) {
    ...

    res.on('end', function() {
        fbResponse = JSON.parse(body);
        if(onsuccess){
            onsuccess(null, fbResponse);
        }

Then in your caller code:

relay(url, function(err, result){
    console.log(result);
});

Another option is to use httpsync module which provides synchronous apis for the same functionality that 'http' module provides. But in node js programming, you should always avoid synchronous calls.