title: extjs 4 - get VS select VS query
body: <p>I am working on ExtJS 4.2 now. There are 3 ways to access DOM elements - get, select, query.</p>
  
  <p>I want to know the difference between them. Why three separate methods? </p>
  
  <p>we have a question here: <a href="https://stackoverflow.com/questions/6350693/get-vs-select-vs-query-for-accessing-elements-with-ext-js-framework">SVO</a></p>
  
  <p>But it doesn't give me any clear answers. Looking for something specific / detailed answer.</p>
  
  <p>Will be grateful if you can help with the explanation.</p>
  
  <p>Thanks in advance :-)</p>
  
  <p>EDIT based on answer below:</p>
  
  <p>I am not much into jQuery so can't understand through comparison. Can anyone help me with the difference between an Ext.element and a composite element?</p>
  
  <p>EDIT 2: </p>
  
  <p>What is Ext.dom.Element? Any different from Ext.element? and if anyone could throw some light on "Ext.fx.Anim" package?</p>