title: Include socket.io in the script tag using html
body: <p>While using <code>html</code> for long time, we used to include the script tags calling for some file within the same folder of the <code>html</code> page, or any other folder but we have to include the exact source of it, something like that:</p>
  <p><code>&lt;script src = &quot;the source of the file and its name&quot;&gt;&lt;/script&gt;</code></p>
  <p>Using <a href="https://socket.io/get-started/chat/" rel="nofollow noreferrer">socket.io</a> website, there is <code>index.html</code> file, and the script tag is like that:</p>
  <p><code>&lt;script src=&quot;/socket.io/socket.io.js&quot;&gt;&lt;/script&gt;</code></p>
  <p>but in fact the real source of <code>socket.io.js</code> file is in the node modules, even-though the website is working well, if I include the real source of this file, the website will crash.</p>
  <p>I am really curious about the reason of this strange situation, someone explain it to me, please!</p>