javascript advanced interview questions

<span class="hljs-function"><span class="hljs-keyword">function</span> <span class="hljs-title">addNode</span>(<span class="hljs-params"></span>) </span>{ <span class="hljs-keyword">var</span> newP = <span class="hljs-built_in">document</span>.createElement(<span class="hljs-string">"p"</span>);
										<span class="hljs-keyword">var</span> textNode = <span class="hljs-built_in">document</span>.createTextNode(<span class="hljs-string">" This is a new text node"</span>);
										newP.appendChild(textNode); <span class="hljs-built_in">document</span>.getElementById(<span class="hljs-string">"firstP"</span>).appendChild(newP); }