title: Difference between dom.byId() vs dojo.byId()?
body: <p>I'm a beginner to dojo toolkit. And I know that <code>dojo.byId()</code> function is similar to JavaScript's <code>document.getElementById()</code> but I don't understand what's the use of <code>dom.byId()</code>.</p>
  
  <p>Can someone explain me what are the differences between dom.byId() and dojo.byId()?</p>