MediaWiki:Common.js

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Revision as of 01:02, 29 August 2020 by Mudbill (talk | contribs)
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/* Any JavaScript here will be loaded for all users on every page load. */

const backToTop = document.getElementById("BackToTop");
if(backToTop) {
  document.addEventListener("scroll", function() {
    const isVisible = window.pageYOffset > 400;
    backToTop.style.opacity = isVisible ? '1' : '0';
    if(backToTop.style.opacity === 0) backToTop.hidden = true;
    else backToTop.hidden = false;
  });
}