Ajouter scrolltotop.js

scrolltotop.js

@@ -0,0 +1,24 @@
+// scrolltotop.js
+
+// Execute a function when the window is being scrolled
+window.onscroll = function () { scrollFunction() };
+
+// When the user scrolls down 20px from the top of the document, show the button
+function scrollFunction() {
+    // Get the button
+    var mybutton = document.getElementById("scrollToTopButton");
+
+    if (document.body.scrollTop > 20 || document.documentElement.scrollTop > 20) {
+        mybutton.style.opacity = 1;
+        mybutton.style.visibility = "visible";
+    } else {
+        mybutton.style.opacity = 0;
+        mybutton.style.visibility = "hidden";
+    }
+}
+
+// When the user clicks on the button, scroll to the top of the document
+function topFunction() {
+    document.body.scrollTop = 0;
+    document.documentElement.scrollTop = 0;
+}