How to make a special SPAN in text?

Hi,

In my question there is the footer...
And there is the copyright... with years.

For example:

<p>All rights reserved (C) John Doe, 2017-2021.</p>

So... There can be a JavaScript for the second year to always be the actual year automatically.

The example footer text in a "notepad edited" tml file would be like this:

<p>All rights reserved (C) John Doe, 2017-<span id="_CopyRight_ThisYear">2021</span></p>
<script>
 var d = new Date();
 var n = d.getFullYear();
 document.getElementById("_CopyRight_ThisYear").innerHTML = n;
</script>

So...
How to make this SPAN, and how to add the script to it in NicePage?

Thanks,
Gime
2023.jan.05.th. 01.45 CET