javascript - Parsing JSON data from a URL

Question

I'm trying to create function that can parse JSON from a url. Here's what I have so far:

function get_json(url) {
    http.get(url, function(res) {
        var body = '';
        res.on('data', function(chunk) {
            body += chunk;
        });

        res.on('end', function() {
            var response = JSON.parse(body);
                return response;
        });
    });
}

var mydata = get_json(...)

When I call this function I get errors. How can I return parsed JSON from this function?

Answer 1

In case someone is looking for an solution that does not involve callbaks

    function getJSON(url) {
        var resp ;
        var xmlHttp ;

        resp  = '' ;
        xmlHttp = new XMLHttpRequest();

        if(xmlHttp != null)
        {
            xmlHttp.open( "GET", url, false );
            xmlHttp.send( null );
            resp = xmlHttp.responseText;
        }

        return resp ;
    }

Then you can use it like this

var gjson ;
gjson = getJSON('./first.geojson') ;