cacheable JSONP

gistfile1.txt

(function($){
  // simple js string hashing
  var simpleHash = function(s, tableSize) {
    var i, hash = 0;
    for (i = 0, l = s.length; i < l; i += 1) {
      hash += (s[i].charCodeAt() * (i+1));
    }
    return Math.abs(hash) % tableSize;
  };

  $.getJSONP = function(url, callback) {
    var callbackName = 'jsonp' + simpleHash(url, Math.pow(10,20));
    $.getJSONP.callbacks = $.getJSONP.callbacks || {};
    $.getJSONP.callbacks[callbackName] = callback;
    $.ajax({url:url, jsonpCallback: '$.getJSONP.callbacks.' + callbackName, dataType: 'jsonp'});
  };
  
})(jQuery);

var url = 'http://api.soundcloud.com/users/matas/tracks.json?consumer_key=mdVdGxuDlepZrVwRYbo4Q';
$.getJSONP(url, function(response){
  console.log('the JSONP response:', response);
});