title: What is meaning of "(function(window, undefined){})(window)" in JavaScript?
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/2716069/how-does-this-javascript-jquery-syntax-work-function-window-undefined">How does this JavaScript/JQuery Syntax work: (function( window, undefined ) { })(window)?</a>  </p>
  </blockquote>
  
  
  
  <pre><code>(function(window, undefined){})(window);
  </code></pre>
  
  <p>What is the meaning of this code? I have seen it in many documents, especially in jQuery documents.</p>
  
  <p>How does this work, and why is it defined thus?</p>