Jsonp function callback does not recognized

Question

I'm trying to implement this jsonp function. But the callback function does not work, here is the function.

 function jsonp(url, callback) { var callbackName = 'jsonp_callback_' + Math.round(100000 * Math.random()); window[callbackName] = function(data) { delete window[callbackName]; document.body.removeChild(script); callback(data); }; var script = document.createElement('script'); script.src = url + (url.indexOf('?') >= 0 ? '&' : '?') + 'callback=' + callbackName; document.body.appendChild(script); } jsonp('http://www.helloword.com', function(data) { alert(data); }); 

The url is triggered but I want to manipulate data inside the callback function.

Thanks in advance.

Answer 1

Its seems that I need a valid url to call, I was testing with a random url.

 function jsonp(url, callback) { var callbackName = 'jsonp_callback_' + Math.round(100000 * Math.random()); window[callbackName] = function(data) { delete window[callbackName]; document.body.removeChild(script); callback(data); }; var script = document.createElement('script'); script.src = url + (url.indexOf('?') >= 0 ? '&' : '?') + 'callback=' + callbackName; document.body.appendChild(script); } var el = document.getElementById('clickme'); el.addEventListener('click',function(e){ jsonp('http://www.telize.com/jsonip', function(data) { console.debug(data); }); });