title: Sublime Text Editor 3: "Uncaught ReferenceError: sjs is not defined"
body: <p>I'm new to Sublime Text Editor, and this if my first experience with writing script. I'm hoping to make some simple custom games to use in my classroom with 6th graders while also being able to instruct them how to make such games. I'm attempting to follow along with the following tutorial: </p>
  
  <p><a href="https://www.youtube.com/watch?v=4qspa4rKazU" rel="nofollow noreferrer">https://www.youtube.com/watch?v=4qspa4rKazU</a></p>
  
  <p>Here is my own code:</p>
  
  <pre><code>&lt;!DOCTYPE html&gt;
  &lt;html&gt;
  &lt;head&gt;
  &lt;title&gt; Coding Example&lt;/title&gt;
  &lt;script&gt;
  function start(){
  sjs.open();
  
      var background = new sjs.Image("Images/street.png");
      background.setSize(800, 500);
  
  }
  &lt;/script&gt;
  &lt;/head&gt;
  &lt;body onload="start()"&gt;
  &lt;h1&gt; Exampleg &lt;/h1&gt;
  
  &lt;div id="target" style="margin:auto;background:grey;"&gt;&lt;/div&gt;
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>Here is the error message that I receive when I attempt to open in browser:</p>
  
  <p>"Uncaught ReferenceError: sjs is not defined
      at start (index.html:7)
      at onload (index.html:15)"</p>
  
  <p>This error message doesn't appear on the tutorial, even though my code is written the same way. I believe this is why I can't get the background image to display.</p>
  
  <p>Any help would be greatly appreciated!</p>