chor=changedAttributes"><code>changedAttributes()</code></a>
method. <code>changedAttributes</code> returns an object, whose keys are the changed
properties and values are an array of values <code>[oldValue, newValue]</code>.</p>
<pre class="language-javascript line-numbers"><code class="javascript language-javascript">person<span class="token punctuation">.</span>isAdmin<span class="token punctuation">;</span> <span class="token comment">// => false</span>
person<span class="token punctuation">.</span>hasD