title: How do I initialize a Uint8Array?
body: <p>I want to create a Uint8Array with 8 elements.  I tried this</p>
  
  <pre><code>var myarr = new Uint8Array(255,255,255,255,40,92,143,2);
  </code></pre>
  
  <p>but when I run</p>
  
  <pre><code>myarr.length
  </code></pre>
  
  <p>I get back "255" when I expect the answer would be "8".  I assume I'm doing somethign wrong in my intitialization step but don't know what that is.</p>