title: Global object access in strict mode
body: <p>Consider the following code snippet:</p>
  
  <pre><code>var global = (function(){
      return this;
  }());
  </code></pre>
  
  <p>When this executes global will point to <code>window</code> object in browser. 
  <br>
  But this doesn't work in strict mode. Why?</p>