title: why does is say - underscore is undefined
body: <p>Why does is say - '_' is undefined, below is a basic simple example and a fiddle. thank you</p>
  
  <p><a href="http://jsfiddle.net/fuEfq/" rel="nofollow">http://jsfiddle.net/fuEfq/</a></p>
  
  <pre><code>-------------index.html---------------------------
  &lt;html&gt;
  &lt;head&gt;
  
      &lt;title&gt;&lt;/title&gt;
  
          &lt;script type="text/javascript" src="jquery.js"&gt;&lt;/script&gt;
          &lt;script type="text/javascript" src="underscore.js"&gt;&lt;/script&gt;     
          &lt;script type="text/javascript" src="myJs.js"&gt;&lt;/script&gt;   
  
      &lt;head&gt;  
  
      &lt;html&gt;
  
      &lt;body&gt;
  
  
      &lt;script&gt;
  
      &lt;button type="button" onclick = "loadThis();"&gt;Click Me!&lt;/button&gt;
  
  
  
      &lt;/script&gt;
  
      &lt;/body&gt;
  
  &lt;/html&gt;
  </code></pre>
  
  <hr>
  
  <pre><code>-------------myJs.js---------------------------
  
  
  var loadThis = function(){
  
      vas x = _.uniq([1, 2, 1, 3, 1, 4]);
  
      alert(x);
  
  };
  </code></pre>