title: What is the function of google.maps.event.addDomListener(window, 'load', initialize);?
body: <p>I was trying Google maps. I found this statement.</p>
  
  <pre><code>google.maps.event.addDomListener(window, 'load', initialize);
  </code></pre>
  
  <p>what is the function of that statement ? </p>