title: How to get value from input component element in ExtJs
body: <p>This is my code:</p>
  
  <pre><code>xtype: 'component',
  autoEl: {
      html: '&lt;input type="text"&gt;'
  },
  listeners: {
      render: function(_component) {
          _component.getEl().on('keyup', function(e) {
              console.log(_component.getValue());
          });
      }
  }
  </code></pre>
  
  <p>As you can see, I am trying to output the value of the input each time a key is pressed in the input.  However, the console outputs an error that reads, "Uncaught TypeError: Object [object Object] has no method 'getValue'"</p>
  
  <p>How can I get the value of this textbox?</p>