title: How to find user by their id in discord.js
body: <p>I want my bot to be able to give specific roles to specific users declared with their id.
  I tried:</p>
  <pre class="lang-js prettyprint-override"><code>const user = bot.users.cache.get(args[2]);
  user.roles.add(&quot;[role ID]&quot;);
  </code></pre>