-<b>var</b> isBoxInstance = t.isXType(<em>'box'</em>, true); <i>// false, not a direct BoxComponent instance</i></code></pre><div class="mdetail-params"><strong>Parameters:</strong><ul><li><code>xtype</code> : String<div class="sub-desc">The xtype to check for this Component</div></li><li><code>shallow</code> : Boolean<div class="sub-desc">(optional) False to check whether this Component is descended from the xtype (this is
+<b>var</b> isBoxInstance = t.isXType(<em>'box'</em>, true); <i>// false, not a direct BoxComponent instance</i></code></pre><div class="mdetail-params"><strong>Parameters:</strong><ul><li><code>xtype</code> : String/Ext.Component/Class<div class="sub-desc">The xtype to check for this Component. Note that the the component can either be an instance
+or a component class:
+<pre><code><b>var</b> c = <b>new</b> Ext.Component();
+console.log(c.isXType(c));
+console.log(c.isXType(Ext.Component));</code></pre></div></li><li><code>shallow</code> : Boolean<div class="sub-desc">(optional) False to check whether this Component is descended from the xtype (this is