javascript callback function call itself until true

Question

I am running a function that i need to keep running until i get a response example

exports.getJson = function(url, callback) {

    var loader = Titanium.Network.createHTTPClient();
    loader.open("GET", url);
    loader.onload = function() {
        var response = JSON.parse(this.responseText);
        callback(response);
    };
    loader.onerror = function(e) {
        callback(false);
    };
    // Send the HTTP request
    loader.send();

}

ok the problem i am having is it will sometimes give me a response of null and i need it to run again.

so i am calling it like this.

    url = 'http://example.com/test.json';
    main.getJson(url, function(response) {
            if(response){
                addData(response);

            }else{      
//return no response i need to run the function again now until it comes back as true
            }       
    });

Can anyone give me a good way to do this maybe try at least 3 times then return false???

Thanks

take a look stackoverflow.com/questions/14483580/…

salexch
– salexch

2013-01-23 15:58:06 +00:00
Commented Jan 23, 2013 at 15:58 — salexch
– salexch, Commented Jan 23, 2013 at 15:58

Felix Kling · Accepted Answer · 2013-01-23 16:03:24Z

4

Just put the code in function and call it again:

var counter = 0;
function getData() {
    main.getJson('http://example.com/test.json', function(response) {
        if(response){
            addData(response);
        }
        else if (counter < 3) {
            counter++;
            getData();
        }   
    });
});

answered Jan 23, 2013 at 16:03

Felix Kling

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