Hi, my friend asked me to help him with his website, he recently bought metronic however we don't know how to implement the Dark Mode (No page refresh) mentioned in the documentation (HTML):
<a>https://preview.keenthemes.com/metronic8/demo1/documentation/getting-started/dark-mode.html</a>

The documentation does give this Javascript code, however we don't know how to implement it.

KTApp.setThemeMode("dark", function() {
console.log("changed to dark mode");
}); // set dark mode

KTApp.setThemeMode("light", function() {
console.log("changed to light mode");
}); // set light mode