Problem with Ajax.Request using JSon and Prototype

Question

I am using the following function to load a PlayList of Songs from 'PlayListJSON.aspx' but somethings seems wrong,evrytime OnFailure is getting called, I am unable to debug it further. any help would be really gr8. Player.prototype.loadPlaylist = function(playlistId, play) { req = new Ajax.Request('/PlaylistJSON.aspx?id=' + playlistId, { method: 'GET', onSuccess: function(transport, json) { eval(transport.responseText); player.setPlaylist(playlist.tracklist, playlist.title, playlistId); player.firstTrack(); if (play) player.playSong(); }, onFailure: function() { //error } }); } JavaScript questions and answers, JavaScript questions pdf, JavaScript question bank, JavaScript questions and answers pdf, mcq on JavaScript pdf, JavaScript questions and solutions, JavaScript mcq Test , Interview JavaScript questions, JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)

Answer 1

Generally, OnFailure gets called when the page you are calling out to can't be reached for some reason. Are you positive that the URL /PlaylistJSON.aspx is valid? Have you tried passing the parameters argument instead of specifying them as part of the url? req = new Ajax.Request('/PlaylistJSON.aspx', { method: 'GET', parameters: { 'id': playlistId }, onSuccess: function(transport,json){ eval(transport.responseText); player.setPlaylist(playlist.tracklist,playlist.title, playlistId); player.firstTrack(); if (play) player.playSong(); }, onFailure: function() { //error } });