 JS to update cookies</h3>
<div>You will need to manipulate cookies using JavaScript as mentioned at the beginning, Blazor Server is a SPA framework and only send 1 initilializing request. Therefore, you cannot modify this request since it's already been sent. The purpose of manipulating the cookies for storing selected language for later visit or to open multiple tabs with the same language. Add a new JS file <code>BlazorUtil.js</code> as follows:</div>
<pre class="code" language="javascript">class BlazorU