nder</strong> method of the model as follow:</p>
<pre><code class="hljs css language-js"><span class="hljs-function"><span class="hljs-keyword">function</span> <span class="hljs-title">render</span>(<span class="hljs-params">id</span>) </span>{
  <span class="hljs-keyword">let</span> dom = <span class="hljs-literal">null</span>;

  <span class="hljs-keyword">if</span> (id === <span class="hljs-string">'body'</span>) {
    dom = <span class="hljs-built_in">document</span>.body;
  } <span class="hljs-keyword"