toLolcatString.js

/**
 * toLolcatString()
 * Converts a string from plain english to lolcat speak using YQL and jQuery
 * 
 * @example
 *    toLolcatString("Hi. How are you?", function(lolcatStr) { alert(lolcatStr); }); // => "OH HAI. HOWZ U?"
 */
var toLolcatString = (function() {
  var YQL_QUERY = "SELECT content FROM html WHERE url=\"http://speaklolcat.com/?from={str}\" AND xpath='//textarea[@id=\"to\"]'";
  
  return function(str, callback) {
    var encodedStr = encodeURIComponent(str),
        query = YQL_QUERY.replace("{str}", encodedStr);
    
    $.getJSON("http://query.yahooapis.com/v1/public/yql?format=json&callback=?", {
      q: query
    }, function(response) {
      var lolcatStr = response && response.query && response.query.results && response.query.results.textarea;
      if (typeof(lolcatStr) != "undefined") {
        callback(lolcatStr);
      } 
    });
  };
})();