title: How to modify JavaScript in a UIWebView programmatically?
body: <p>I need to modify dynamically a Javascript inside my UIWebView. I load a file html locally, inside the Documents folder of my app.</p>
  
  <p>I need to create a var attributes like this:</p>
  
  <pre><code>var attributes = {
      "feedURL": "http://www.obliviux.com/?feed=rss2", //insert NSString *RSS here
      "maxAgeToShow": "-1",  //insert NSString *maxAge here
      "numItemsToShow": "10",  //insert NSString *numItems here
      "topStories": "3"  //insert NSString *topStories here
  };
  </code></pre>
  
  <p>And modify their value with some NSString I have saved.. </p>
  
  <p>How can i do this?</p>