title: Loading wordpress plugin on specific page only
body: <p>I am developing a plugin for wordpress that loads javascript in a page. 
  But i want this plugin to load only on selected pages. Not all pages.
  Can someone suggest how to do that? 
  Here is the code.</p>
  
  <pre><code>add_action('wp_enqueue_scripts', 'soundninja_enqueue');
  function soundninja_enqueue($hook)
  {
      wp_enqueue_script('soundninja', // id
          'http://soundninja.github.io/SNtest/build/Soundninja.min.js', // path
          array('jquery'), // dependencies
          0, // appends ?ver=$wordpress_version
          true // in_footer
      );
  }
  </code></pre>