title: Naming/formatting standard for global variables
body: <p>What is both the naming and formatting standard for global variables in JavaScript?</p>
  
  <p>For example:</p>
  
  <pre><code>var global_var // ?
  var _global_var // ?
  var GLOBAL_VAR // ?
  var _GLOBAL_VAR // ?
  ...
  </code></pre>
  
  <p>Note: I am NOT talking about constants, just simply variables that have global scope.</p>