How to use innerHTML in JS

 

Tutorial

If you want to edit footer year 

 yearly you don't need to edit year in every page but if you use this code you can edit in one javascript line.

<h3>Copyright <a id="year">2021</a> | Official Website<br>Devoloped By<br><a id="dev">Methuka Artigala</a></h3>

document.getElementById("year").innerHTML = "2022";